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Math Help - Last thread for the Day!

  1. #1
    LOL
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    Last thread for the Day!

    Identify and explain the errors and make the necessary corrections in each of the following answers done by a student

    6x+12=10x-4
    16x=-16
    x=-1

    4(2x-1)=7x+4
    8x-1=7x+4
    8x-7x=4+1
    x=5
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  2. #2
    No one in Particular VonNemo19's Avatar
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    Quote Originally Posted by LOL View Post
    Identify and explain the errors and make the necessary corrections in each of the following answers done by a student

    6x+12=10x-4
    16x=-16
    x=-1

    4(2x-1)=7x+4
    8x-1=7x+4
    8x-7x=4+1
    x=5
    a) 6x-10x=-4-12
    -4x=-16

    b)The left hand side of the second line should be 8x-4
    Last edited by VonNemo19; June 17th 2009 at 09:59 PM. Reason: made a real bad boo boo
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  3. #3
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    Quote Originally Posted by VonNemo19 View Post
    a) 6x-10x=-4-12
    -16x=-16
    Oops!

    6x+12=10x-4
    -4x = -16
    x = 4


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  4. #4
    No one in Particular VonNemo19's Avatar
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    Quote Originally Posted by yeongil View Post
    Oops!

    6x+12=10x-4
    -4x = -16
    x = 4


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