What Is The Answer To This Math Problem?

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What is the answer to this math problem?
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 Cerberus.Eugene
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By Cerberus.Eugene 2011-04-14 21:21:44
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That still leaves the question of whether to follow the convention of parenthetical multiplication first or not. That rule may or may not be fading due to increased usage of calculators and computers. Transforming the problem changes the fraction.

As I've stated numerous times, the original problem that sparked the controversy would likely have had a fully written out fraction that would have made the whole thing very clear.
 Quetzalcoatl.Tomasello
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By Quetzalcoatl.Tomasello 2011-04-14 21:22:30
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Cerberus.Eugene said:
EDIT: I think you're trying to distribute across division. Take a look at the distributive rule. 1(1/2) is not the same thing as 2(9+3). And if you're going to continue arguing about distribution, READ THE THREAD. PARTICULARLY THIS BIT HEURR

Then if you still don't get it read the next two pages of this thread.

Ok 1(1/2) = 1(.5) = .5 = 1/2

And 2(9+3) = 18+6 OR 2(12) = 24

I don't get what you think I'm doing wrong. I already told you the logic I used on the 4/(1/2) was crap. It's the same logic people are using to justify 288.
 Lakshmi.Feifongwong
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By Lakshmi.Feifongwong 2011-04-14 21:23:04
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Cerberus.Eugene said:
That still leaves the question of whether to follow the convention of parenthetical multiplication first or not. That rule may or may not be fading due to increased usage of calculators and computers. Transforming the problem changes the fraction.

As I've stated numerous times, the original problem that sparked the controversy would likely have had a fully written out fraction that would have made the whole thing very clear.


It's clear as it is. You people just can't seem to follow a simple syntax...
 Cerberus.Eugene
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By Cerberus.Eugene 2011-04-14 21:23:31
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Quetzalcoatl.Tomasello said:
Cerberus.Eugene said:
EDIT: I think you're trying to distribute across division. Take a look at the distributive rule. 1(1/2) is not the same thing as 2(9+3). And if you're going to continue arguing about distribution, READ THE THREAD. PARTICULARLY THIS BIT HEURR

Then if you still don't get it read the next two pages of this thread.

Ok 1(1/2) = 1(.5) = .5 = 1/2

And 2(9+3) = 18+6 OR 2(12) = 24

I don't get what you think I'm doing wrong. I already told you the logic I used on the 4/(1/2) was crap. It's the same logic people are using to justify 288.

That has nothing to do with the problem we're talking aobut and everything to do with why multiplication and division are weighted differently.
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By Lakshmi.Feifongwong 2011-04-14 21:24:24
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Leviathan.Chaosx said:

If it were written:
48÷(2(9+3))
48÷(2(12))
48÷(2*12)
48÷24
=2

But it's not written like that which is what people don't seem to get.
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By Serj 2011-04-14 21:25:09
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Wow, this is still going?
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By Alexander.Xgalahadx 2011-04-14 21:25:26
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As far as the problem I've got to say I was wrong or better yet only half right. It can be 2 If the denominator of 48 is 2x(9+3) or it can be 288 is the denominator of 48 is only 2. So in all honesty the only ones wrong are those saying there is one answer also if you say it is 2 because you think pemdas says to multiply first. I'm sorry you have the one of the right answers but for the wrong reason. You got lucky but thats it.
 Lakshmi.Feifongwong
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By Lakshmi.Feifongwong 2011-04-14 21:25:28
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Serj said:
Wow, this is still going?

I know right?
 Cerberus.Eugene
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By Cerberus.Eugene 2011-04-14 21:25:54
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Lakshmi.Feifongwong said:
Leviathan.Chaosx said:

If it were written:
48÷(2(9+3))
48÷(2(12))
48÷(2*12)
48÷24
=2

But it's not written like that which is what people don't seem to get.
what you don't seem to get is because of convention, different calculators will get different answers. calculators are supposed to be masters of OOO.
 Lakshmi.Feifongwong
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By Lakshmi.Feifongwong 2011-04-14 21:26:25
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Alexander.Xgalahadx said:


As far as the problem I've got to say I was wrong or better yet only half right. It can be 2 If the denominator of 48 is 2/(9+3) or it can be 288 is the denominator of 48 is only 2. So in all honesty the only ones wrong are those saying there is one answer also if you say it is 2 because you think pemdas says to multiply first. I'm sorry you have the one of the right answers but for the wrong reason. You got lucky but thats it.

There is only 1 answer. It's the retards that can't follow proper syntax that can't get it.
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By Cerberus.Eugene 2011-04-14 21:27:39
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Lakshmi.Feifongwong said:
Alexander.Xgalahadx said:


As far as the problem I've got to say I was wrong or better yet only half right. It can be 2 If the denominator of 48 is 2/(9+3) or it can be 288 is the denominator of 48 is only 2. So in all honesty the only ones wrong are those saying there is one answer also if you say it is 2 because you think pemdas says to multiply first. I'm sorry you have the one of the right answers but for the wrong reason. You got lucky but thats it.

There is only 1 answer. It's the retards that can't follow proper syntax that can't get it.

GG hoss. you're *** blocking just like the dude above you was.
Think about this in the larger perspective and you'll see why the problem arose in the first place. Which is frankly the more interesting question to begin with.
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By Leviathan.Chaosx 2011-04-14 21:28:29
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Dividing by 2 is the same as multiplying by 1/2 which is .5

A number next to parenthesis means multiply.

It's not that hard.

48÷2(9+3)

becomes:

48*.5*(9+3)

48*.5*12

=288

How much easier could it be?
 Alexander.Xgalahadx
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By Alexander.Xgalahadx 2011-04-14 21:29:18
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I thought that at first to if you read my posts prior to that one I went on a rant about people not knowing how to use Pemdas.
The thing is if the problem is like this.


It's 2.
but if it's like this


it's 288.

The problem with this problem is that the notation is absolute ***lol. No one in higher math would use this symbol. ÷
 Leviathan.Chaosx
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By Leviathan.Chaosx 2011-04-14 21:29:29
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Lakshmi.Feifongwong said:
Leviathan.Chaosx said:

If it were written:
48÷(2(9+3))
48÷(2(12))
48÷(2*12)
48÷24
=2

But it's not written like that which is what people don't seem to get.
Yeah I know, it baffles me on why they would ignore any rules of math and stick in parenthesis where none exist.
 Lakshmi.Feifongwong
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By Lakshmi.Feifongwong 2011-04-14 21:30:13
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Cerberus.Eugene said:
Lakshmi.Feifongwong said:
Leviathan.Chaosx said:

If it were written:
48÷(2(9+3))
48÷(2(12))
48÷(2*12)
48÷24
=2

But it's not written like that which is what people don't seem to get.
what you don't seem to get is because of convention, different calculators will get different answers. calculators are supposed to be masters of OOO.

Then your problem is that you're relying on your calculator to much. I'm sorry to tell you, but it's true. If your calculator came up with the wrong answer, then you used it wrong or you read the question wrong.
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By Leviathan.Chaosx 2011-04-14 21:31:07
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Alexander.Xgalahadx said:

The problem with this problem is that the notation is absolute ***lol. No one in higher math would use this symbol. ÷
This is also true.
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By Leviathan.Chaosx 2011-04-14 21:31:55
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Lakshmi.Feifongwong said:
Cerberus.Eugene said:
Lakshmi.Feifongwong said:
Leviathan.Chaosx said:

If it were written:
48÷(2(9+3))
48÷(2(12))
48÷(2*12)
48÷24
=2

But it's not written like that which is what people don't seem to get.
what you don't seem to get is because of convention, different calculators will get different answers. calculators are supposed to be masters of OOO.

Then your problem is that you're relying on your calculator to much. I'm sorry to tell you, but it's true. If your calculator came up with the wrong answer, then you used it wrong or you read the question wrong.
Also I've put this into 4 different computer languages and they all get it right (288).
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By Cerberus.Eugene 2011-04-14 21:32:44
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I'm not going back through why its the case again. Think about how a faction is resolved on one line in a calculator. If you can understand the difficulty in displaying a faction on one line, you can see why a person entering this into a calculator can get it wrong. If you want a simple answer to the problem then there you go, you have it. If you want to know how to avoid making mistakes in the furture, then think about its broader implications. You know what you're looking for when you enter a calculation in a calculator. The calculator doesn't.
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By Cerberus.Eugene 2011-04-14 21:33:41
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I don't know what else to tell you brospeh.
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By Cerberus.Eugene 2011-04-14 21:34:30
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Leviathan.Chaosx said:
Alexander.Xgalahadx said:

The problem with this problem is that the notation is absolute ***lol. No one in higher math would use this symbol. ÷
This is also true.
hur dee durr thats essentially what happens in a calculator
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By Quetzalcoatl.Tomasello 2011-04-14 21:35:27
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You either think 48÷2(9+3) means:

A) 48÷(2(9+3)) OR;

B) (48÷2)(9+3)

I get it, it means A.

That why no one above 4th grade uses ÷

It should have been written as a fraction 48 / 2(9+3) flipped vertical

48
______ = 2
2(9+3)
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By Alexander.Xgalahadx 2011-04-14 21:38:00
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Quetzalcoatl.Tomasello said:
You either think 48÷2(9+3) means:

A) 48÷(2(9+3)) OR;

B) (48÷2)(9+3)

I get it, it means A.

That why no one above 4th grade uses ÷

It should have been written as a fraction 48 / 2(9+3) flipped horizontal

48
________ = 2
2(9+3)
Yes that would have stopped all argument and this thread wouldn't have had to be made. Since it's impossible to tell what the denominator is with this symbol no one can give a solid answer.
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By Cerberus.Eugene 2011-04-14 21:38:11
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Or it could have been written as the faction
48 * (9+3)
__
2

What gets people confused is they don't understand as the original intention isn't clear.
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By Quetzalcoatl.Tomasello 2011-04-14 21:38:27
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FACT: MOST CALCULATORS ARE TOO STUPID TO KNOW HOW TO COMPUTE THE ORDER OF OPERATIONS.

I figured that out in 2nd grade.
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By Fenrir.Nightfyre 2011-04-14 21:39:02
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Lakshmi.Feifongwong said:
Cerberus.Eugene said:
Lakshmi.Feifongwong said:
Leviathan.Chaosx said:

If it were written:
48÷(2(9+3))
48÷(2(12))
48÷(2*12)
48÷24
=2

But it's not written like that which is what people don't seem to get.
what you don't seem to get is because of convention, different calculators will get different answers. calculators are supposed to be masters of OOO.

Then your problem is that you're relying on your calculator to much. I'm sorry to tell you, but it's true. If your calculator came up with the wrong answer, then you used it wrong or you read the question wrong.
I really can't be bothered to go find the pic, but somebody put the equation as written into four different calculators. Two said 288, the other two said 2. I can tell you that entering 48/2(9+3) gives 288 via Google's calculator, but 2 on my Casio. If I knew where my TI-89 was right off hand I'd go find it and see what it said for shiggles.

There is no error. Neither answer is wrong given the ambiguous syntax.
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By Cerberus.Eugene 2011-04-14 21:39:31
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Quetzalcoatl.Tomasello said:
FACT: MOST CALCULATORS ARE TOO STUPID TO KNOW HOW TO COMPUTE THE ORDER OF OPERATIONS.

I figured that out in 2nd grade.

You'd hope graphing calculators would be able to, ti-85 and ti-86 are both graphing calculators.
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By Bahamut.Icelord 2011-04-14 21:40:41
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You were right! No WAIT! I was Right!
 Cerberus.Eugene
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By Cerberus.Eugene 2011-04-14 21:40:44
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Fenrir.Nightfyre said:
Lakshmi.Feifongwong said:
Cerberus.Eugene said:
Lakshmi.Feifongwong said:
Leviathan.Chaosx said:

If it were written:
48÷(2(9+3))
48÷(2(12))
48÷(2*12)
48÷24
=2

But it's not written like that which is what people don't seem to get.
what you don't seem to get is because of convention, different calculators will get different answers. calculators are supposed to be masters of OOO.

Then your problem is that you're relying on your calculator to much. I'm sorry to tell you, but it's true. If your calculator came up with the wrong answer, then you used it wrong or you read the question wrong.
I really can't be bothered to go find the pic, but somebody put the equation as written into four different calculators. Two said 288, the other two said 2. I can tell you that entering 48/2(9+3) gives 288 via Google's calculator, but 2 on my Casio. If I knew where my TI-89 was right off hand I'd go find it and see what it said for shiggles.

There is no error. Neither answer is wrong given the ambiguous syntax.

I got too wrapped up in trying to handle two arguments at once to succintly say that for the fifth time, thanks for helping out.
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By Fenrir.Nightfyre 2011-04-14 21:42:18
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Cerberus.Eugene said:
I don't know what else to tell you brospeh.
^ pic I was talking about
 Quetzalcoatl.Tomasello
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By Quetzalcoatl.Tomasello 2011-04-14 21:52:18
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Cerberus.Eugene said:
Or it could have been written as the faction
48 * (9+3)
__
2

What gets people confused is they don't understand as the original intention isn't clear.

No because that would of been 48(9+3)÷2...

Now your just arguing just to argue. Swap out ÷ for / which is the same exact thing and you now have a clear numerator and denominator.

48÷2(9+3) = 48/2(9+3)

Numerator 48 / Denominator 2(9+3)
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