If the replacement set is the set of whole numbers, solve :
3x - 1 > 8
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⇒ 3x > 8 + 1
⇒ 3x > 9
Dividing both sides by 3 we get,
⇒ x > 3
Since, x ∈ W
∴ Solution set = {4, 5, 6, ……..}.
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If x ∈ N, find the solution set of inequations.
(i) 5x + 3 ≤ 2x + 18
(ii) 3x - 2 < 19 - 4x
x + 7 ≤ 11
8 - x > 5