Which is the best first step and explanation for solving this system of equations 3x + y = 7 x + y = 3

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Which is the best first step and explanation for solving this system of equations 3x + y = 7 x + y = 3

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Ladonna 3 years 2021-08-29T11:30:22+00:00 1 Answers 9 views 0

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  1. Delwyn
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    2021-08-29T11:31:52+00:00
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    Answer: Add the two equations together to eliminate y

    Step-by-step explanation:

    X+y=3

    4x-y=7

    I would use elimination since one equation has +y and one equation has -y

    Add the two equations together

    X+y=3

    4x-y=7

    ——————-

    5x = 10

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