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10 September, 19:25

Solve. x + y = 3 y = x-7 Use the substitution method. The solution is (5, - 2). There is no solution. The solution is (8, 1). There are an infinite number of solutions.

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  1. 10 September, 19:42
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    The solution is (5, - 2)

    Step-by-step explanation:

    x + y = 3 = > y = 3 - x

    y = x - 7 } = >

    => 3 - x = x - 7 = > 3 + 7 = x + x = > 2x = 10 = > x = 5

    x + y = 3

    5 + y = 3

    y = 3 - 5

    y = - 2
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