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18 October, 08:03

Solve by elimination.

5x-7y=19

7x-7y=-7

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Answers (1)
  1. 18 October, 08:29
    0
    (x, y) = (-13,-12)

    Step-by-step explanation:

    5x - 7y = 19

    7x - 7y = - 7 Multiply both sides of the equation by - 1

    Which then gives you:

    5x-7y=19 Sum the equations vertically to eliminate

    -7x+7y=7 at least on variable

    -2x=26 Divide both sides of the equation by - 2

    X=-13 Substitute the given value of x into the equation 7x - 7y = -7

    7 x (-13) - 7y=-7 solve the equation for y

    y=-12

    Thus gives you (-13,-12)

    Hope this was useful! Sorry if it's wrong.
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