solve simultaneous equation by substitution method y-4x=6 2y-3x=4

Question

solve simultaneous equation by substitution method
y-4x=6
2y-3x=4

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Tài Đức 1 year 2021-09-02T07:31:38+00:00 1 Answers 0 views 0

Answers ( )

    0
    2021-09-02T07:32:50+00:00

    Answer:

    Step-by-step explanation:

    y-4x=6

    y=6+4x, using this value in 2y-3x=4 gives

    2(6+4x)-3x=4

    12+8x-3x=4

    5x+12=4

    5x=-8

    x= -8/5= -1.6, making y=6+4x become

    y=6+4(-1.6)

    y= -0.4, so the solution is the point

    (-1.6, -0.4)

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