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21 August, 07:37

Solve |x + 7| = 12

a. {-19, - 5}

b. {-5,19}

c. {-19,5}

d.{5,19}

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Answers (2)
  1. 21 August, 08:02
    0
    For

    |a|=b

    assume

    a=b and a=-b

    |x+7|=12

    assume

    x+7=12 and x+7=-12

    minus 7 both sides

    x=5 and x=-19

    C is answer
  2. 21 August, 08:05
    0
    When solving absolute value equations, you must account for both the positive and negative cases.

    x+7 = 12 AND x+7 = - 12

    x = 5 x = - 19
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