A solution to 3x+4y=-5 and -5x+y=16 in ordered pair

Question

A solution to 3x+4y=-5 and -5x+y=16 in ordered pair

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Alice 1 week 2021-09-15T17:17:08+00:00 1 Answer 0

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    2021-09-15T17:18:12+00:00

    Answer:

    (x,y) = (-3, 1)

    Step-by-step explanation:

    q1 3x + 4y = -5

    q2 -5x + y = 16

    from q2 y = 16 + 5x

    Put into q1

    3x + 4 (16 + 5x) = -5

    3x + 64 + 20x = -5

    3x + 20 x + 64 = -5

    23x = -5 -64

    23x = -69

    x = -69/23

    x = -3

    y = 16 + 5(-3)

    y = 16 – 15

    y = 1

    (x,y) = (-3, 1)

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