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Mathematics 15 Online
OpenStudy (anonymous):

|3x + 12| = 18

OpenStudy (trojanpoem):

3x + 12 = 18 or 3x + 12 = -12 ( you have taken the absolute value means you have taken the square root after squaring so if may have been - or +) 3x = 6 , x = 2 3x = -24 x = -8

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