Question 9 (10 points) Solve for x, 2(x – 1) + 4 = 4(x + 1)

Question

Question 9 (10 points)
Solve for x,
2(x – 1) + 4 = 4(x + 1)

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Philomena 3 years 2021-08-21T20:04:03+00:00 1 Answers 2 views 0

Answers ( )

  1. yenoanh
    0
    2021-08-21T20:05:38+00:00
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    1. Expand
    2x − 2 + 4 = 4x + 4

    2. Simply
    2x + 2 = 4x + 4

    3. Subtract
    2 = 4x + 4 – 2x

    4. Simplify
    2 = 2x + 4

    5.Subtract
    2 – 4 = 2x

    6. Simplify
    -2 = 2x

    7. Divide both sides by
    -1 = x

    8.Switch sides.
    x = -1

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