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9 March, 00:31

5x - 2y = 30 if 8 = x

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  1. 9 March, 02:54
    0
    If x = 8 then y = 5

    Step-by-step explanation:

    Plug x into the equation and solve

    5x - 2y = 30 < - Rewrite

    5 (8) - 2y = 30 < - Plug x in

    40 - 2y = 30 < - Simplify

    -40 - 40 < - Get y alone

    -2y = - 10 < - Simplify

    y = 5 < - Divide both sides by - 2 to get y
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