If the replacement set is the set of whole numbers, solve :
x + 7 ≤ 11
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⇒ x ≤ 11 - 7
⇒ x ≤ 4
Since, x ∈ W
∴ Solution set = {0, 1, 2, 3, 4}.
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If x ∈ N, find the solution set of inequations.
(i) 5x + 3 ≤ 2x + 18
(ii) 3x - 2 < 19 - 4x
3x - 1 > 8
8 - x > 5