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4 November, 20:59

How do I show work for - 2x-7=3 (4x+7)

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Answers (2)
  1. 4 November, 21:12
    0
    x=-2

    Step-by-step explanation:

    -2x-7=3 (4x+7)

    distribute

    -2x-7 = 3*4x + 3*7

    -2x-7 = 12x+21

    add 2x to each side

    -2x-7+2x = 12x+2x+21

    -7 = 14x+21

    subtract 21 from each side

    -7-21 = 14x+21-21

    -28 = 14x

    divide by 14

    -28/14 = 14x/14

    -2 = x
  2. 4 November, 21:17
    0
    -2x - 7 = 3 (4x + 7) Distribute/multiply 3 into (4x + 7)

    -2x - 7 = 12x + 21 Add 2x on both sides

    -2x + 2x - 7 = 12x + 2x + 21

    -7 = 14x + 21 Subtract 21 on both sides

    -7 - 21 = 14x + 21 - 21

    -28 = 14x Divide 14 on both sides

    -2 = x
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