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Verified answer
|3x -6| = 153x - 6 = +-15
=>3x - 6 = 15
3x = 15 + 6
3x = 21
x = 21/3
x = 7
=> 3x - 6 = -15
3x = -15 + 6
3x = -9
x = -9/3
x = -3
nilai x1 = -3 dan x2 = 7
3x = 15+6
3x = 21
x = 21 : 3
x = 7