What Is The Answer To This Math Problem?

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What is the answer to this math problem?
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By 2011-04-11 13:09:13
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 Bahamut.Raenryong
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By Bahamut.Raenryong 2011-04-11 13:14:08
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It's just misleading. I don't know anywhere in the math I've been doing for the last few years where something as elementary as (9 + 3) would be placed in brackets.

It's a mindfuck for me because I automatically think that the brackets is just a form where a number has been substituted instead of an unknown variable (ie (x + 3) => (9 + 3)) and so would be multiplying the denominator and not just a common factor.
 Ragnarok.Alo
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By Ragnarok.Alo 2011-04-11 13:15:13
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Quote:
it's a flawed question.
lol, I get that you have never done any programming?

this is how equations are written in programming and there is only one way to solve it.










288.
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 Bahamut.Raenryong
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By Bahamut.Raenryong 2011-04-11 13:16:12
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Isn't the idea of programming to keep your code as simple and easy to read as possible?

If your intention is to make the answer 288, you'd put the term in the bracket clearly multiplying the numerator.
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 Odin.Godofgods
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By Odin.Godofgods 2011-04-11 13:20:39
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Sylph.Tigerwoods said:
Caitsith.Shiroi said:
I must admit the person who came up with that is a brillant troll to make so many people think it's 2 lol.
If (9+3) is in the denominator, it is 2. If it's in the numerator, it's 288. From how the question was asked, it can go either way.

48 (9 + 3)
__________
2


48
______
2 (9 + 3)

From 48/2(9+3), you can't say for a fact which of the two problems is actually being asked.

Yes you can. If you were to start with that second example and write it out in a single line it would be 48 / [2(9+3)] which gives clear dimention of numerator and denominator. if that were the case then the answer would be 2.

where as 48÷2(9+3) would be written as

48
---- * (9+3) = 288
2


You can try to interpreat it as many ways as you want, but ultimitly your back where u started with the ACTUAL problem. 48÷2(9+3)
And you and only interpreat it as it is layed out.

And as it is layed out, the answer is 288
 Odin.Godofgods
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By Odin.Godofgods 2011-04-11 13:24:19
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and btw, to those that didnt realize it in math class; Perentasis or Brackets for some of you, ment that you do whats IN them first. Not whats next or attached to them


Edit: PEMDAS was jsut a acronym thought to us in elementry school when first starting algibra.
Please
Excuse
My
Dear
Aunt
Sally

in an effort to help young kids remember the order
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 Asura.Baroma
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By Asura.Baroma 2011-04-11 13:36:12
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"as its layed out" I see it as 2 personally. 2(9+3) seems grouped together. If it were written 48 / 2 x 12, yeah then 288 makes sense. but im sure somebody pointed that out as well in the previous 5 pages
 Bahamut.Nixak
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By Bahamut.Nixak 2011-04-11 13:40:06
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Quote:
The real moral of this story is to use more parentheses.
((48)/(2(9+3))).

Quote:
—Alorael, who considers the first equation in the thread a bad equation. 48÷2*(9+3) would be fine. 48÷2(9+3) implies, but is not, 48÷(2(9+3)). Lesson: clarity is sometimes at least as important as being technically correct.

Quote:
(9+3)/3 = 11
 Leviathan.Yogurt
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By Leviathan.Yogurt 2011-04-11 13:41:01
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here
 Odin.Godofgods
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By Odin.Godofgods 2011-04-11 13:41:35
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Asura.Baroma said:
"as its layed out" I see it as 2 personally. 2(9+3) seems grouped together. If it were written 48 / 2 x 12, yeah then 288 makes sense. but im sure somebody pointed that out as well in the previous 5 pages

48/2*12 is the same thing as 48/2(12)

2(12) is nothing more then 2*12

As i said, perentasis means you do whats INSIDE it first. Not thats attached to it.
 Bahamut.Raenryong
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By Bahamut.Raenryong 2011-04-11 13:42:29
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I believe the technically correct answer is 288, but it's written horribly.

I could ask what 2^2(2) is as an analogy. It's just a silly question.
 Bahamut.Icelord
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By Bahamut.Icelord 2011-04-11 13:46:37
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In mathematics, reduction refers to the rewriting of an expression into a simpler form. For example, the process of rewriting a fraction into one with the smallest whole-number denominator possible (while keeping the numerator an integer) is called "reducing a fraction". Rewriting a radical (or "root") expression with the smallest possible whole number under the radical symbol is called "reducing a radical".

In linear algebra, reduction refers to applying simple rules to a series of equations or matrices to change them into a simpler form. In the case of matrices, the process involves manipulating either the rows or the columns of the matrix and so is usually referred to as row-reduction or column-reduction, respectively. Often the aim of reduction is to transform a matrix into its "row-reduced echelon form" or "row-echelon form"; this is the goal of GAUSSIAN ELIMINATION.


In Calculus, reduction refers to using the technique of integration by parts to evaluate a whole class of integrals by reducing them to simpler forms. A.K.A. Static Reduction

Therefore before any attempt at any equation you must first reduce the equation to its row-reduced echelon form which is 24(9+3)
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 Odin.Godofgods
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By Odin.Godofgods 2011-04-11 13:51:29
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simple as this

48÷2(9+3) = 288
48÷[2(9+3)] = 2
 Bahamut.Raenryong
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By Bahamut.Raenryong 2011-04-11 13:57:11
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Odin.Godofgods said:
simple as this

48÷2(9+3) = 288
48÷[2(9+3)] = 2

Yus, but in a normal problem you would never bracket the (9 + 3) there unless you either mean for the latter, or you've substituted a variable for a constant and that is an intermediate step. It is a mindfuck, and poorly written.
 
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By 2011-04-11 14:05:39
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 Ragnarok.Corres
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By Ragnarok.Corres 2011-04-11 14:10:04
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usually when it's written:
2(9+3)
i take it for 2*(9+3)
in college math classes we did the same on tests etc. so it wasn't a big deal first taking numbers in brackets together and later on multiply it with number x.

but i think it's just a troll thing.
so good going for discussing something like that for 5 PAGES!.

congratulations.
 Ifrit.Tulnig
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By Ifrit.Tulnig 2011-04-11 14:10:33
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Sylph.Tigerwoods said:
Ifrit.Tulnig said:
Alexander.Tidusblitz said:
its two. people are doing the order wrong and getting 288 or w/e. PEMDAS. Parenthesis Exponents Multiplication Division Add Subtract. Parenthesis. (9+3) = (12) 48/2(12) Exponents. None Multiplication. 2(12) = 24 48/24 Division. 48/24 = 2. Answer is two, anyone that says otherwise is stupid.
This is basic high school stuff people. Tidusblitz's solution is correct. BTW I have a graduate degree in Mathematics ><
Except for multiplication doesn't come before division. They're the same tier and it goes left to right.

SOLUTION:
48/2*(9+3) = 48/2*12 = 24 * 12 = 288

Thank you for correcting me, I hadn't put in as much thought I should have. On a side note, those that were getting 2, here is what you did wrong,

48/2*(9+3) = 48/2*(12) not equal to 48/24 = 2

OPPS, my bad. Now I can feel like a tard for the rest of the day lol.
 Bahamut.Icelord
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By Bahamut.Icelord 2011-04-11 14:32:26
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LOL

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 Odin.Godofgods
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By Odin.Godofgods 2011-04-11 14:40:44
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Odin.Godofgods said:
And btw, unless your using a mroe advanced calculator such as the graphing clacs or better, it wont give you the answer your looking for because all basic calculators do each problem/peice as they are entered. They have no order of operation.
 Alexander.Kewitt
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By Alexander.Kewitt 2011-04-11 14:45:25
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http://www.mathgoodies.com/lessons/vol7/order_operations.html

288 is the correct answer.

1. do ( ) 1st. Where anything in ( ) are to follow these steps. as if they where there own answer.
2. Then working left to right you do the following.
( * and % in order that they come up)
3. Then working from left to right again you do
( + and - in order that they come up)

I love the calc that all come up with different answer human error in the programming not a problem with the calc.

Never Question Google!
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 Cerberus.Proud
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By Cerberus.Proud 2011-04-11 14:53:17
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Fenrir.Schutz said:
Bad notion no?



...versus...

^^^^^
^^^^^
^^^^^
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By Siren.Flunklesnarkin 2011-04-11 15:15:45
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everybody arguing over middle school math xD

Hopefully people can start arguing over the order of the planets next :o

pluto isn't really a planet >:U
 Valefor.Ivaan
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By Valefor.Ivaan 2011-04-11 15:17:04
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Bahamut.Icelord said:



LOL



Gotta love the 2 different answers from 2 different calculators hehe
 Unicorn.Moldtech
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By Unicorn.Moldtech 2011-04-11 15:19:19
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Bahamut.Icelord said:
LOL

You so win the entire arguement :D
 Fairy.Lethewaters
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By Fairy.Lethewaters 2011-04-11 15:24:28
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It's -1! Ask Gigiboo!
 Sylph.Tigerwoods
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By Sylph.Tigerwoods 2011-04-11 18:24:58
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Odin.Godofgods said:
Sylph.Tigerwoods said:
Caitsith.Shiroi said:
I must admit the person who came up with that is a brillant troll to make so many people think it's 2 lol.
If (9+3) is in the denominator, it is 2. If it's in the numerator, it's 288. From how the question was asked, it can go either way.

48 (9 + 3)
__________
2


48
______
2 (9 + 3)

From 48/2(9+3), you can't say for a fact which of the two problems is actually being asked.

Yes you can. If you were to start with that second example and write it out in a single line it would be 48 / [2(9+3)] which gives clear dimention of numerator and denominator. if that were the case then the answer would be 2.

where as 48÷2(9+3) would be written as

48
---- * (9+3) = 288
2


You can try to interpreat it as many ways as you want, but ultimitly your back where u started with the ACTUAL problem. 48÷2(9+3)
And you and only interpreat it as it is layed out.

And as it is layed out, the answer is 288
÷ could be viewed as a / however, for the rest of the equation, brackets would not be required.

Quote:
48 / [2(9+3)] which gives clear dimention of numerator and denominator.

It's not clear, that's the point.

That divisor sign can easily be

48
_______
2 (9 + 3)

That is writable without brackets.

That being said, I personally go w/ the 288, its just the question leaves room for much ambiguity.
 Sylph.Oddin
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By Sylph.Oddin 2011-04-11 19:11:37
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Sylph.Oddin said:
Solve the problem, save the world.

Also, I give this another 2 pages tops before it devolves into bickering, name-calling and flat out flaming. Prove me wrong FFXIAH. Prove me wrong.

*Two pages later*

Civil discussions still?!

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By palladin9479 2011-04-12 06:41:58
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As written there is no correct answer. If you rewrite it you can come into two different answers depending on who is interpreting. In this instance we follow the GIGO rule (Garbage In Garbage Out) in which case we say no and don't bother wasting the energy to argue or call each other names.
 Cerberus.Kalyna
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By Cerberus.Kalyna 2011-04-12 06:47:40
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The answer is Pi, jackasses.
 Quetzalcoatl.Kanjirou
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By Quetzalcoatl.Kanjirou 2011-04-12 07:53:04
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That's not math. This is math.
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