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5x + 7 ≤ 3x+1 atau 3x +1 ≤ 7x + 17
5x - 3x ≤ 1 - 7 atau 3x - 7x ≤ 17- 1
2x ≤ -6 atau - 4x ≤ 16
x ≤ -3 atau x ≥ - 4
HP (x) = x | -4 ≤ x ≤ -3