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28 June, 05:51

Decide which variable to isolate. Then substitute for this variable, and solve the system. y = x - 5, x + y = 9

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  1. 28 June, 07:39
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    x = 7

    y = 2

    Step-by-step explanation:

    x + y = 9 but y = x - 5

    x + (x - 5) = 9

    2x - 5 + 5 = 9 + 5

    2x/2 = 14/2

    x = 7

    y = x - 5

    y = (7) - 5

    y = 2
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