x+2=1 U -x-2=1
x=-1 -x=3
x=-3
|x+2|=1
x+2 = 1 ∨ x + 2 = -1
x=-1 x=-3
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x+2=1 U -x-2=1
x=-1 -x=3
x=-3
|x+2|=1
x+2 = 1 ∨ x + 2 = -1
x=-1 x=-3