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April 29th, 2011, 06:27 PM  #1 
Member Joined: Nov 2010 Posts: 39 Thanks: 0  Confusing PEMDAS problem. Help for clarification
Hi, I found this problem in my university page in facebook. The problem is this 6/2(1+2)=? Using the PEMDAS method, I came to the answer that it is 1.. But there's a professional from the page saying that the right answer is 9. She says that division comes first before multiplication. Help! I need to clarify what the true answer is before my head bursts out of confusion. Thank you very much. 
April 29th, 2011, 06:41 PM  #2 
Senior Member Joined: Apr 2007 Posts: 2,140 Thanks: 0 
6 ÷ 2(1 + 2) = 6 ÷ 2(3) = 3(3) = 9

April 29th, 2011, 06:48 PM  #3 
Member Joined: Nov 2010 Posts: 39 Thanks: 0  Re: Confusing PEMDAS problem. Help for clarification
Why is it you need to divide first the number 6 to 2? Am I right when I say that we can express the problem in a rational form the numerator is 6 and denominator is 2(1+2) simplifying getting an answer of 1? 
April 29th, 2011, 06:50 PM  #4 
Senior Member Joined: Apr 2007 Posts: 2,140 Thanks: 0 
PEMDAS, PEDMAS, PEMDSA or PEDMSA works, i.e. from left to right.

April 29th, 2011, 09:07 PM  #5 
Senior Member Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,209 Thanks: 517 Math Focus: Calculus/ODEs  Re: Confusing PEMDAS problem. Help for clarification
See this topic.


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