# 6÷2(1+2)=?

• Jan 1st 2013, 08:22 PM
GTMotion
6÷2(1+2)=?
• Jan 1st 2013, 10:07 PM
MarkFL
Re: 6÷2(1+2)=?
$3\cdot3=9$
• Jan 1st 2013, 11:07 PM
janvdl
Re: 6÷2(1+2)=?
Quote:

Originally Posted by GTMotion

Watch this guy explain with a similar problem ( 48÷2 (9+3) ) :
Berkeley Ring Theorist Solves 48 ÷ 2(9+3) - YouTube

In a nutshell, the problem is ambiguous and nothing more than a troll.
• Jan 1st 2013, 11:18 PM
MarkFL
Re: 6÷2(1+2)=?
Yes, I have seen this question at least 30 times on Yahoo Answers during the past week, and it is said to have come from facebook, which surprises me...I thought facebook was all about 12 year old girls bullying one another. :D
• Jan 2nd 2013, 12:40 AM
janvdl
Re: 6÷2(1+2)=?
Quote:

Originally Posted by MarkFL2
Yes, I have seen this question at least 30 times on Yahoo Answers during the past week, and it is said to have come from facebook, which surprises me...I thought facebook was all about 12 year old girls bullying one another. :D

Questions almost exactly similar to this one have been on the internet for about 2 years now. Some troll posts it on a forum to watch the guaranteed mania afterwards.
• Jan 2nd 2013, 01:09 AM
MarkFL
Re: 6÷2(1+2)=?
Yes, I have seen them come and go too...on the site I help to moderate, we usually lock the first topic after the correct result is posted, then delete any subsequent duplicate postings of the topic.
• Jan 2nd 2013, 07:19 AM
pattyhernandezcaldera
Re: 6÷2(1+2)=?
See, I got 1 as my answer, but I've been away from school for 12+ years so...I'd ask for a second and third opinion. This is how I got it:
6/2(1+2) ------> At some point I was taught that anything in parenthesis is always done first, which means this would be next:
6/2(3) -------> multiplication is supposed to follow so then:
6/6 and..
But like I said, I've been out of school for way too long. I hope this helps and if needed, please correct me.
• Jan 2nd 2013, 07:27 AM
MarkFL
Re: 6÷2(1+2)=?
Multiplication and division are done with the same precedence from left to right, so we would have:

6/2(1+2) = 6/2(3) = 3(3) = 9

If we wish for the division to be done first, then we would write:

6/(2(1+2))

As it has been given though, is the same as:

(6/2)(1+2)
• Jan 2nd 2013, 07:30 AM
skeeter
Re: 6÷2(1+2)=?
Quote:

Originally Posted by pattyhernandezcaldera
See, I got 1 as my answer, but I've been away from school for 12+ years so...I'd ask for a second and third opinion. This is how I got it:
6/2(1+2) ------> At some point I was taught that anything in parenthesis is always done first, which means this would be next:
6/2(3) -------> multiplication is supposed to follow
6/6 and..
no ... multiplication has the same precedence as division. 6/2 first, then multiply by 3.
9 is the correct value of the expression.

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