prealgebra

posted by mikey

please help evaluate this problem with the steps. m/n +m/2p, when m=-4/7,n=5/3,p=8/5

  1. Reiny

    just plug in the numbers..

    m/n +m/2p

    = (-4/7) / (5/3) + (-4/7) / (16/5)
    = (-4/7)(3/5) + (-4/7)(5/16)
    = -12/35 + (-20/112)
    = -12/35 - 5/28

    now 35 = 5 x 7
    and 28 = 4 x7
    so the LCD = 5x4x7 = 140

    carry on from here

  2. mikey

    that is where my problem comes in please help with that part with the steps

  3. Anonymous

    please help me to solve this problem from this point

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