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a) 3 (x-1) <2x +4
3x -3 < 2x +4
3x - 2x < 4 +3
x < 7
b) X + 3 > -2
X > -2 -3
X > -5
5x - 3 ≤ 7 x + 9
5x - 7 x ≤ 9 + 3
- 2 x ≤ 12
x ≤ - 12 / 2
x ≤ -6