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15 April, 17:42

What is - 3 (3y-7) = 21-9y

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  1. 15 April, 21:12
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    the equation is equivalent, y is any number

    Step-by-step explanation:

    -3 (3y-7) = 21-9y

    -9y + 21 = 21 - 9y

    -9y = - 9y

    y=y

    any number will satisfy y=y
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