Solve the inequality 18 - 3 (2x - 5) > 12 ; x ∈ W.
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Solve the inequation 8 - 2x ≥ x - 5; x ∈ N.
Solve : 4x - 5 > 10 - x, x ∈ {0, 1, 2, 3, 4, 5, 6, 7}.
Solve : 15 - 2(2x - 1) < 15, x ∈ Z.