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8 June, 00:41

The value of the expression 8-y is 2 times as large as the value of the expression 7+y. Solve for y.

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  1. 8 June, 01:05
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    y = - 2

    Step-by-step explanation:

    8 - y = 2 (7+y)

    Distribute the right side

    8 - y = 2x7 + 2xy

    8 - y = 14 + 2y

    Collect like terms

    8 - 14 = y + 2y

    -6 = 3y

    Divide both sides by 3

    -6/3 = 3y/3

    -2 = y

    y = - 2
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