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10 September, 05:41

What is the solution to this system of equation?

x=2y-4

7x+5y = - 66

+1
Answers (1)
  1. 10 September, 05:55
    0
    x=-8 y=-2

    Step-by-step explanation:

    substitute x for 2y-4

    7 (2y-4) + 5y=-66

    factor

    14y-28+5y=-66

    add 28 on both sides

    14y+5y=-38

    19y=-38

    divide by 19 on both sides

    y = - (38/19)

    y=-2

    Plug - 2 into the first equation for y

    x=2 (-2) - 4

    x=-4-4

    x=-8
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