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Question
Solve:
4x – 5 > 10 – x, x ∈ {0, 1, 2, 3, 4, 5, 6, 7}.
Sum
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Solution
4x - 5 > 10 - x, x ∈ N.
⇒ 4x + x > 10 + 5
⇒ 5x > 15
⇒ x > `15/5 = 3`
∴ x = 4, 5, 6, 7
Solution set = {4, 5, 6, 7}
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