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17 August, 00:59

X - (4x-7) = 5x - (x+21)

This is for my math class on homework

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  1. 17 August, 02:41
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    X - (4x-7) = 5x - (x+21)

    x-4x+7=5x-x-21

    -3x+7=4x-21

    -7 - 7

    -3x=4x-28

    -4x - 4x

    -7x=-28

    /-7 / - 7

    x=4
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