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9 - 5x - 10 ≥ x + 23
-5x - x ≥ 23 - 9 + 10
-6x ≥ 24
x ≤ 24/-6
x ≤-4
Hp = {-4, -5, -6,...}
4x + 8 ≥ x + 23
4x - x ≥ 23-8
3x ≥ 15
x ≥ 15/3
x ≥ 5
Hp : {5,6,7,8,...}
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