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2 < | 2 - (x/2) | ≤ 3
a) 2 < |2 - (x/2)| < -2
2 < 2 - x/2 < -2
2-2 < -x/2 < -2-2
0 < -x/2 < -4
0 < -x < - 8
0 > x > 8
b) -3 ≤ 2 - (x/2) ≤ 3
-3 - 2 ≤ -x/2 ≤ 3 - 2
5 ≤ -x/2 ≤ 1
10 ≤ -x ≤ 2
- 10≤ x ≤ -2
.
himpunan penyelesaiannya adalah :
x < 0 ∩ x > 8 ∩ x ≤ -2 ∩ x ≥ -10
HP x = -10 ≤ x ≤ -2