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b.x kurng dari 11
c.x kurang dri sm dgn 5
d.x lebih dari 4
x ≥ 4-2
x ≥ 2
b. x-2 < 9
x < 9 + 2
x < 11
c. 20 + x ≤ 25
x ≤ 25 -20
x ≤ 5
d. 15 - x > 11
x = 11 - 15
x = -4