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18 October, 22:52

Solve for x: |3x + 12| = 18

A. x = 2, x = - 10

B. x = 2, x = - 2

C. x = 10, x = - 10

D. x = - 2, x = 10

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Answers (1)
  1. 18 October, 23:05
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    |3x + 12| = 18

    |3x + 12| = ±18

    3x + 12 = 18 or 3x + 12 = - 18

    - 12 - 12 - 12 - 12

    3x = 6 3x = - 30

    3 3 3 3

    x = 2 x = - 10
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