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    odinn7's Avatar
    odinn7 Posts: 7,691, Reputation: 1547
    Entomology Expert
     
    #1

    Sep 3, 2012, 01:10 PM
    Answer To This Math Question
    I saw this on Facebook and it has me somewhat confused.

    6-1x0+2/2=?

    To me that reads as 6-1=5 then 5x0=0 then 0+2=2 then 2/2=1


    I think the answer is 1 but I am seeing people saying it's 7 because of PEMDAS.

    Without parentheses, I thought it would simply be done left to right.

    Could someone tell me how it could possibly be 7?

    If it is 7... could you please explain in simple English how you get that since I'm no math wiz.
    Wondergirl's Avatar
    Wondergirl Posts: 37,769, Reputation: 5427
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    #2

    Sep 3, 2012, 01:13 PM
    I also get 1, and was always taught to go from left to right if there are no parens.
    Athos's Avatar
    Athos Posts: 483, Reputation: 53
    Full Member
     
    #3

    Sep 3, 2012, 03:44 PM
    1 x 0 = 0.
    6 - 0 = 6
    2 / 2 = 1
    6 + 1 = 7

    Not saying that's the right method, but showing you how they arrived at 7.
    Wondergirl's Avatar
    Wondergirl Posts: 37,769, Reputation: 5427
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    #4

    Sep 3, 2012, 04:59 PM
    Athos, did you mentally add parens?
    Athos's Avatar
    Athos Posts: 483, Reputation: 53
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    #5

    Sep 3, 2012, 06:19 PM
    No. You multiply and divide before adding or subtracting.
    odinn7's Avatar
    odinn7 Posts: 7,691, Reputation: 1547
    Entomology Expert
     
    #6

    Sep 3, 2012, 10:19 PM
    That's what I saw as the answer too... multiply and divide first but that makes no sense to me. I was taught that it reads left to right.
    Alty's Avatar
    Alty Posts: 28,318, Reputation: 5972
    Pets Expert
     
    #7

    Sep 3, 2012, 11:28 PM
    I get 1 as well.

    It would be interesting to find out if there are math rules that differ from what we were taught, because I too was taught that no parens meant you did the equation left to right.

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