prealgebra

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

  • prealgebra -

    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

  • prealgebra -

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

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