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04-08-2011, 11:53 AM   #24
Numinous
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Re: 48÷2(9+3) = ??

Quote:
 Originally Posted by AniMeFaN yes that is how I read it, which is the correct way. you do it from left to right with equal operations, that is the correct way whether YOU do it or not
Except it can lead to false results depending on the how the problem is presented, because I guarantee you that there are pairs OF situations that can be written down with the same operations in the same sequence, but one operation will have priority in one situation compared to the other, which might have another operation with priority, therefore brackets are needed to indicate what is that pivotal operation.

Sue me if you think I'm obsessed with brackets, but I think they are essential for the understanding of equations that have operations with the same weight in the same "level" of the equation (I don't know the correct term in English, but when I mean "level", I mean how they are inside or outside certain brackets).

Quote:
 that happens when not everyone go's along with the consensus and solves it a different way, doesn't mean its faulty.
I just showed how I went along with an aspect of the consensus and got 288 and ACt went with another and got 2. They have the same validity because they were solved with the consensus. The problem is the equation's for not having enough annotation.

Quote:
 well act is wrong because / doesnt meant seperation of a fraction
Yes, it does. Numerator/denominator is the consensus for fractions, so he indeed went with the separation and got 2. It just happens to ALSO mean division in mathematics.

Quote:
 if the equation was written 48 / 2 x (9+3) he would still get 2 and it would be 288
You just proved how faulty this equation is: you even contradict yourself.

Quote:
 so whats your answer? i lean towards 2
Quote:
 what symbol would you use for division? this /? doesnt change anything
So you say you think it's 2, say that ÷ is the same as /, but when someone (like ACt) uses it as fraction, you say the correct answer would be 288.

THAT DOESN'T HAPPEN WITH EQUATIONS THAT AREN'T FAULTY!
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Last edited by Numinous; 04-08-2011 at 11:54 AM.

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