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untuk nilai mutlak, maka berlaku :
3 - 2x < -2
3 - 3 - 2x < -2 - 3
-2x < -5
2x > 5
x > 5/2
dan
3 - 2x > 2
3 - 3 - 2x > 2 - 3
-2x > -1
2x < 1
x < 1/2
HP = { x | x < 1/2 atau x > 5/2, x∈R}