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Thread: 6÷2(1+2)=

  1. #61
    Your very own Pikachu! Banned Peegee's Avatar
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    Grin

    I resent that. I didn't say 1 I said 9.

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    another way to show the solution:

    6/2(1+2) = x

    you get a '1' if you distribute 2(1+2)

    there's no other way to get a 1
    6/2(1+2) = 6/(2+4) = 6/6 = 1
    6/2(1+2) = 6/(2*3) = 6/6 = 1

    but those brackets don't exist when you distribute. They disappear

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

    alternatively: 6/2*3 = (3* 6 ) / 2 not 6 / (2*3)

    you can only move the multiplication symbol around in an equation, but not the division sign

    3*5 = 5*3
    3/5 != 5/3

    edit again:

    I've re-written the exact same question in a way that anybody can solve

    Last edited by Peegee; 04-29-2011 at 09:54 PM.

  2. #62
    Eggstreme Wheelie Recognized Member Jiro's Avatar
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    Default

    I see your handwriting has improved!

  3. #63
    Your Prime Minister Timekeeper's Avatar
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    Quote Originally Posted by õ_Ô View Post
    Quote Originally Posted by Jiro View Post
    It can be Over or Of, I think Of makes more sense because (Powers) Of y'know?
    I always knew the O as "orders".... but imo BEDMAS (brackets, exponents, div, mul, add, sub) is the best. For no reason other than I learnt it as a kid.
    Yep it stands for Orders, as in Powers/Exponents/Indices etc.

    I think primary schools need to make the fact that you do things left to right a little clearer. Though with some people, it'll always be a lost cause...


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