Ix+2I ≤ 1
-1 ≤ x + 2 ≤ 1
-1 - 2 ≤ x ≤ 1 - 2
-3 ≤ x ≤ -1
x ∈ <-3, -1>
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Ix+2I ≤ 1
-1 ≤ x + 2 ≤ 1
-1 - 2 ≤ x ≤ 1 - 2
-3 ≤ x ≤ -1
x ∈ <-3, -1>