Use the elimination method by subtraction to solve for x and then y. Equation 1 > 2x – 7y = -74 Equation 2 > 3x – 7y = -83

Question

Use the elimination method by subtraction to solve for x and then y.
Equation 1 > 2x – 7y = -74
Equation 2 > 3x – 7y = -83
Solve for x and y.
Please and thank you!​

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Đan Thu 3 years 2021-09-03T17:46:57+00:00 1 Answers 2 views 0

Answers ( )

  1. diemthu
    0
    2021-09-03T17:48:04+00:00
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    Answer:

    Step-by-step explanation:

    Both equations have -7y. You can eliminate them by subtracting one equation from the other:

    Multiply equation 1 by -1, then add it to equation 2:

    -2x + 7y = 74

    3x – 7y = -83

    ———————

    x = -9

    2x – 7y = -74

    2(-9) – 7y = -74

    -7y = -56

    Y = 8

    (x,y) = (-9, 8)

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