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2x - (4 + x) ≥ -22
x - 4 ≥ -22
x ≥ -18
HP : { x | x ≥ -18}
b.
2x - 4 > 3x + 9
2x - 3x > 9 + 4
-x > 13
x < -13
HP : {x | x < -13}