Help! pls 11. The partial solution to a system of equations below contains an error. Find and correct the mistake to find the cor

Question

Help! pls

11. The partial solution to a system of equations below contains an error. Find and correct the mistake to find the correct value of y.

2x + 2y = 4
x + 4y = 14​

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Nguyệt Ánh 4 years 2021-08-15T23:13:00+00:00 1 Answers 23 views 0

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  1. ngockhue
    0
    2021-08-15T23:14:35+00:00
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    Answer:

    Step-by-step explanation:

    2x + 2y = 4

    -2x – 8y = -28

    -6y = -24

    y = 4

    2x + 2(4) = 4

    2x + 8 = 4

    2x = -4

    x = -2

    (-2, 4)

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