Solve system by elimination -9x – y =-19 5x + y = 15

Question

Solve system by elimination -9x – y =-19
5x + y = 15

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Tryphena 3 days 2021-07-22T21:39:08+00:00 1 Answers 0 views 0

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    2021-07-22T21:41:00+00:00

    Answer:

    (1, 10 )

    Step-by-step explanation:

    Given the 2 equations

    – 9x – y = – 19 → (1)

    5x + y = 15 → (2)

    Adding the 2 equations term by term will eliminate the y- term

    – 4x + 0 = – 4

    – 4x = – 4 ( divide both sides by – 4 )

    x = 1

    Substitute x = 1 into either of the 2 equations and solve for y

    Substituting into (2)

    5(1) + y = 15

    5 + y = 15 ( subtract 5 from both sides )

    y = 10

    solution is (1, 10 )

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