From: Dutch <no@email.com>
Subject: Re: Math Quiz answer
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Subject: Re: Math Quiz answer
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From: Dutch <no@email.com>
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On 2/1/2018 3:46 PM, joeturn wrote:
>   6÷2(1+2) = ?
> This expression can be simplified to yield 9
> two ways and not be misunderstood by the majority.
> The obvious is to multiply 6/2 by (1+2)
> 1+2=3 times 6/2=3
> thus 3 X 3 = 9
> 
> The second way to simplify is to covert it to
> a fraction as shown below.
> 6(1+2)/2. So you have
> 6 x 3 divided by 2
> 6x3 =18/2
> 18/2 = 9
> 
> *always remove the parenthesis by solving whats in them first.

This expression can be solved to yield 1 several ways using rules that 
are commonly believed to be correct.

6÷2(1+2) = ?
6÷2(3) = ?
prioritize 2(3) as an implied multiplication like ab, so
6÷6=1
or
6÷2(1+2) = ?
the next operation has a name, I forget what it is..
6÷(2+4) = ?
6÷6=1
or
interpret ÷ as a fraction, again
6÷6=1


>   It is as simple as 1+2x3
> 
No it isn't. (6/2)(1+3) is as simple as 1+2x3
6÷2(1+2) = ? is a confusing expression.
https://math.berkeley.edu/~gbergman/misc/numbers/ord_ops.html

I'm not saying 9 is wrong, the expression is poor. Now obsess about 
something else.