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x ≤ 4
b) 10 ≥ 2x - 6
10 + 6 ≥ 2x
16 ≥ 2x
8 ≥ x
c) 5x - 1 ≤ 3x + 2
2x ≤ 3
x ≤ 3/2
d) -x -4 < 6 - 3x
2x < 10
x < 5
e) 3x + 10 < 5 + 5x
- 2x < -5
x < 5/2
f) 3x ≥ 5x - 20
-2x ≥ -20
x ≥ 10