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| x - 1 | / (x + 2) < 1
» According to the given condition,
(x + 2) ≠ 0
» x ≠ - 2
If (x + 2) is negative,
» (x + 2) < 0
» x < - 2
Therefore, multiply both sides by (x + 2)
» | x - 1 | > x + 2
» Since, x + 2 is negative
» |x - 1| ≥ 0
» x - 1 ≥ 0 or x - 1 ≤ 0
» x ≥ 1 or x ≤ 1
Hence, x = (-∞, ∞)
If (x + 2) is positive.
» | x - 1 | < x + 2, also ≠ 0
» | x - 1 | < 0
It's not possible.
Therefore, x = R - {-2} is the solution.
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