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untuk x - 3 positif
0 < x - 3 ≤ 3
0 + 3 < x - 3 + 3 ≤ 3 + 3
3 < x ≤ 6
untuk x - 3 negatif
0 < -(x - 3) ≤ 3
0 < 3 - x ≤ 3
-3 ≤ x - 3 < 0
-3 + 3 ≤ x - 3 + 3 < 0 + 3
0 ≤ x < 3
nA U nB
= [0, 3) U (3, 6]
HP = {x | 0 ≤ x < 3 dan 3 < x ≤ 6, x ∈ R}