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--------------------- -2
-6 < 3x < 3
--------------------- : 3
-2 < x < 1
2) 2x -5 ≥ 7
2x ≥ 7 + 5
2x ≥ 12
x ≥ 12/2
x ≥ 6
x = {6,7,8,9,10,.....}
Maaf. Aku cuma tau sampai segitu doang