solve each system by elimination. 3x-4y=-2 3y-2x=1

Question

solve each system by elimination.

3x-4y=-2
3y-2x=1

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Thiên Ân 3 years 2021-08-15T05:45:24+00:00 1 Answers 10 views 0

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  1. Acacia
    0
    2021-08-15T05:46:32+00:00
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    Answer:

    y = -1, x = -2

    Step-by-step explanation:

    First, multiply the top equation by 2 to make 3x become 6x:

    6x – 8y = -4

    Second, multiply the bottom equation by 3 to make -2x become -6x:

    9y – 6x = 3

    Add the two equations together, and you get:

    y = -1

    Plug in y as -1 into the first or second equation:

    3x – 4(-1) = -2

    OR

    3(-1) – 2x = 1

    x = -2

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