What is the solution for the system of equations? y=−x+4 y= x−2

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What is the solution for the system of equations? y=−x+4 y= x−2

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Thiên Ân 4 years 2021-08-12T16:47:28+00:00 1 Answers 20 views 0

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  1. ngochoa
    0
    2021-08-12T16:49:09+00:00
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    Answer:

    (3, 1 )

    Step-by-step explanation:

    Given the 2 equations

    y = – x + 4 → (1)

    y = x – 2 → (2)

    Substitute y = x – 2 into (1)

    x – 2 = – x + 4 ( add x to both sides )

    2x – 2 = 4 ( add 2 to both sides )

    2x = 6 ( divide both sides by 2 )

    x = 3

    Substitute x = 3 into either of the 2 equations and solve for y

    Substituting into (2)

    y = 3 – 2 = 1

    solution is (3, 1 )

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )