Solve the system of linear equations by elimination. x+4y=6 −x−2y=−4

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Solve the system of linear equations by elimination. x+4y=6 −x−2y=−4

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Thiên Thanh 3 years 2021-09-05T06:05:37+00:00 1 Answers 12 views 0

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  1. diemkieu
    0
    2021-09-05T06:06:42+00:00
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    Answer:

    (x , y) = (2 , 1)

    Step-by-step explanation:

    // Solve equation [1] for the variable x

    [1] x = -4y + 6

    // Plug this in for variable x in equation [2]

    [2] -(-4y+6) – 2y = -4

    [2] 2y = 2

    // Solve equation [2] for the variable y

    [2] 2y = 2

    [2] y = 1

    // By now we know this much :

    x = -4y+6

    y = 1

    // Use the y value to solve for x

    x = -4(1)+6 = 2

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