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-|4x-5| = -15-3
-|4x-5| = -18 →kalikan dengan (-)
|4x-5| = 18
4x-5 = 18
4x = 18+5
4x = 23
x = 23/4
4x-5 = -18
4x = -18+5
4x = -13
x = -13/4
Hp = {23/4 , -13/4}