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3x - 2 < -5 atau 3x - 2 > 5
3x - 2 + 2 < -5 + 2 atau 3x - 2 + 2 > 5 + 2
3x < -3 atau 3x > 7
3/3 x < -3/3 atau 3/3 x > 7/3
x < -1 atau x > 7/3
HP = {x | x < -1 atau x > 7/3, x∈ R}