If x ∈ Z, solve 2 + 4x < 2x – 5 ≤ 3x. Also represent its solution on the number line.
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Solve 1 ≥ 15 - 7x > 2x - 27, x ∈ N.
Solve 3x - 5 ≤ 6x + 4 < 11 + x, when
(i) x ∈ W
(ii) x ∈ Z
Represent the solution set on a real number in each case.