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15 December, 12:50

Solve for x: |2x + 6| - 4 = 20

A. x = 9 and x = 11

B. x = - 9 and x = 15

C. x = 9 and x = - 15

D. No solution

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Answers (1)
  1. 15 December, 13:19
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    |2x + 6| - 4 = 20

    |2x + 6| = 20 + 4 = 24

    2x + 6 = 24 and 2x + 6 = - 24

    2x = 24 - 6 = 18 and 2x = - 24 - 6 = - 30

    x = 18/2 = 9 and x = - 30/2 = - 15

    x = 9 and x = - 15
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Home » Mathematics » Solve for x: |2x + 6| - 4 = 20 A. x = 9 and x = 11 B. x = - 9 and x = 15 C. x = 9 and x = - 15 D. No solution
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