use the substitution method y=1/3x+2 -2x+3y=9

Question

use the substitution method

y=1/3x+2
-2x+3y=9

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Diễm Kiều 3 years 2021-08-01T06:18:07+00:00 1 Answers 5 views 0

Answers ( )

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    2021-08-01T06:19:37+00:00

    Answer:

    (-3, 3)

    Explanation:

    y = 1/3x + 2
    -2x + 3y = 9

    -2x + 3(1/3x + 2)

    -2x + x + 6 = 9

    -x + 6 = 9

    -x = 3 —> x = -3

    y = 1/3(3) + 2

    y = 1 + 2

    y = 3

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