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LSUBoo
Bowling Green Fan
None. None More Black.
Member since Mar 2006
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re: 48÷2(9+3) = ???????
quote:

48 divided by [2(9+3)]

or

48 divided by 2, multiplied by 9+3

Because there are no brackets present separating the equation into two halves, it seems like it should be read as the second option.

SlowFlowPro
Stanford Fan
Simple Solutions to Complex Probs
Member since Jan 2004
349886 posts

re: 48÷2(9+3) = ???????
i had to look up "vinculum," but i had to show my mom respect b/c she taught me all that shit

i'm going to facebook her and tell her i used vinculum in a sentence. will probably make her week

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SlowFlowPro
Stanford Fan
Simple Solutions to Complex Probs
Member since Jan 2004
349886 posts

re: 48÷2(9+3) = ???????
quote:

Because there are no brackets present separating the equation into two halves, it seems like it should be read as the second option.

don't need brackets if its in the denom, brah

i only used them so that my point was clear

the issue is using the "divided by" sign in text. it creates a failure in language

uway
LSU Fan
Member since Sep 2004
26736 posts

re: 48÷2(9+3) = ???????
Someone bump SFP's "average IQ of each board" thread. We need to re-evaluate the OT.

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CidCock
South Carolina Fan
Member since Sep 2007
Member since Feb 2011
7796 posts

re: 48÷2(9+3) = ???????
quote:

The answer is 288, but it has nothing to do with going left to right like some of you have said.

M/D and A/S are equal operations, than can be done before or after. The only rule is 9+3, first.

so its 48 x 1/2 x 12 or 48 x 12 x 1/2

While your answer is true, left to right matters when division or subtraction is involved. For example in this problem, if you did 48/2, then times (9+3) you would get 288, but if you did 2*(9+3) and then 48/24 you would get 2. Thus, going from left to right matters when dealing with operations that are not commutative.

No, this is not correct. You can division or multiplication first, whichever you like. They are the same.

If you multiplied 12 x 1/2, before you multiplied 48 x 1/2 it makes no difference!

The only question is here is, does the equation read to divide by 2 or multiply by 2.
This post was edited on 4/8 at 8:34 am

manwich
UCF Fan
You've wanted my
Member since Oct 2008
52547 posts

re: 48÷2(9+3) = ???????
PEMDAS

----48/2(9+3) ---->P
9+3 = 11
---- 48/2(11) ---->MD
48/2 = 24
----24(11) ---->MD
24*11 = 264

manwich
UCF Fan
You've wanted my
Member since Oct 2008
52547 posts

re: 48÷2(9+3) = ???????
quote:

The only question is here is, does the equation read to divide by 2 or multiply by 2.
divide 48 by 2

that quotient is multiplied by 11

CidCock
South Carolina Fan
Member since Sep 2007
Member since Feb 2011
7796 posts

re: 48÷2(9+3) = ???????
quote:

9+3 = 11

The doctor is the mother.
This post was edited on 4/8 at 8:35 am

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manwich
UCF Fan
You've wanted my
Member since Oct 2008
52547 posts

re: 48÷2(9+3) = ???????
quote:

but if you did 2*(9+3)
why the hell would anyone do that

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SlowFlowPro
Stanford Fan
Simple Solutions to Complex Probs
Member since Jan 2004
349886 posts

re: 48÷2(9+3) = ???????

CocomoLSU
Penn State Fan
Member since Feb 2004
135541 posts

re: 48÷2(9+3) = ???????
quote:

the issue is using the "divided by" sign in text. it creates a failure in language

This.

CocomoLSU
Penn State Fan
Member since Feb 2004
135541 posts

re: 48÷2(9+3) = ???????
quote:

9+3 = 11

quote:

that quotient is multiplied by 11

The frick?

SlowFlowPro
Stanford Fan
Simple Solutions to Complex Probs
Member since Jan 2004
349886 posts

re: 48÷2(9+3) = ???????
i really hope i wasn't the first to point that out in 18 pages

Placebeaux
LSU Fan
Putting the Panic back in Hispanic
Member since Jun 2008
38624 posts

re: 48÷2(9+3) = ???????
I say 288. I always thought you multiplied but I could be wrong. It has been about 15 years or so since my last algebro question.

CidCock
South Carolina Fan
Member since Sep 2007
Member since Feb 2011
7796 posts

re: 48÷2(9+3) = ???????
quote:

the issue is using the "divided by" sign in text. it creates a failure in language

Agreed.

Can we all agree that multiplication / division and addition / subtraction are the same process and can be done before or after each other and has nothing to do with reading left to right, it's freaking math!

CocomoLSU
Penn State Fan
Member since Feb 2004
135541 posts

re: 48÷2(9+3) = ???????
Please Excuse My Dear Aunt Sally.

SlowFlowPro
Stanford Fan
Simple Solutions to Complex Probs
Member since Jan 2004
349886 posts

re: 48÷2(9+3) = ???????
Parentheses

Exponents

Multiplication-Division

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PurpleDaze
LSU Fan
tickfaw
Member since Aug 2005
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re: 48÷2(9+3) = ???????

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SlowFlowPro
Stanford Fan
Simple Solutions to Complex Probs
Member since Jan 2004
349886 posts

re: 48÷2(9+3) = ???????
quote:

Can we all agree that multiplication / division and addition / subtraction are the same process and can be done before or after each other and has nothing to do with reading left to right, it's freaking math!

hopefullly my helpful rendition of PEMDAS aids this very discussion

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LSUBoo
Bowling Green Fan
None. None More Black.
Member since Mar 2006
71597 posts
Online

re: 48÷2(9+3) = ???????
quote:

the issue is using the "divided by" sign in text. it creates a failure in language

Clearly, or this thread wouldn't have reached page 2.

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