1. 2x - 1 < 7
2x < 8
x < 4
2. P + 5 ≥ 9
P ≥ 4
3. 4 - 3q ≤ 10
-3q ≤ 6
q ≥ -2
4. 4x - 2 > 2x + 5
2x > 7
x > 3,5
5. 2x - 6 < 6x + 3
2x - 6x < 3 + 6
-4x < 9
x > -9/4
6. 12 - 6y ≥ -6
-6y ≥ -18
y ≤ 3
7. (6x - 3)/3 ≥ (2x + 6)/2
kalikan 6
2(6x - 3) ≥ 3(2x + 6)
12x - 6 ≥ 6x + 18
6x ≥ 24
x ≥ 4
8. (12x - 30)/5 ≤ (6x - 12)/2
kalikan 10 kedua ruas
2(12x - 30) ≤ 5(6x - 12)
24x - 60 ≤ 30x - 60
-6x ≤ 0
x ≥ 0