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14 August, 13:47

What is the solution of this system of equations

Y=3x+7 y=x-9

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Answers (1)
  1. 14 August, 14:56
    0
    (-8; - 17)

    Step-by-step explanation:

    hello : y=3x+7 ... (*)

    y=x-9 ... (**)

    by (*) and (**) : 3x+7 = x - 9

    3x-x = - 7-9

    2x = - 16

    x = - 16/2 = - 8

    put this value in (**) : y = - 8-9 = - 17
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