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Verified answer
I x + 2 I ≤ 4☞ x+2 ≤ 4
x ≤ 4-2
x ≤ 2
☞ -(x+2) ≤ 4
-x-2 ≤ 4
-x ≤ 4+2
-x ≤ 6
x ≥ -6
HP : {-6 ≤ x ≤ 2}