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Thread: simplification

  1. March 13th 2009, 08:35 AM #1
    hansfordmc
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    simplification

    I found this simplification, but I'm not understanding how they came up with mn - 3n

    simplify:
    2m^2n - 6mn
    ____________
    2m

    = 2m^2n - 6mn
    ______ ______
    2m 2m

    = mn - 3n
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  2. March 13th 2009, 09:01 AM #2
    Grandad
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    Simplifying

    Hello hansfordmc
    Quote Originally Posted by hansfordmc View Post
    I found this simplification, but I'm not understanding how they came up with mn - 3n

    simplify:
    2m^2n - 6mn
    ____________
    2m

    = 2m^2n - 6mn
    ______ ______
    2m 2m

    = mn - 3n
    \frac{2m^2n-6mn}{2m} = \frac{2m^2n}{2m}-\frac{6mn}{2m}

    = \frac{\color{red}2m\color{black}\times m \times n}{\color{red}2m}- \frac{\color{red}2m\color{black}\times 3 \times n}{\color{red}2m}

    = mn -3n

    Grandad
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  3. March 13th 2009, 09:27 AM #3
    hansfordmc
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    Excellent

    I wish they would have explained it like that - thanks so much.
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