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18 October, 18:46

Solve the system using substitution 5y-x=-5 7y-x=-23

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  1. 18 October, 21:12
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    5y-x = - 5 7y-x = - 23

    x=5y+5

    7y - (5y+5) = - 23

    7y-5y-5 = - 23

    2y = - 23+5

    2y = - 18

    y = - 9

    x = 5y+5

    x = (5*-9) + 5

    x = - 45+5

    x = - 40
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