3x < 12
x < 4
x > 3
(x + 4)/ 2 > 4
x > 4
-1/2x > 10
x < -20
3x + 5 < 20
x < 5
-1(x + 4) < 6
x > -10
x - 5 = 8
x = 13
x < -2
-2(3x + 1) < 1
x > -2
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