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Question
Solve for x in the following in equation, if the replacement set is N<10:
2x + 1 < 17
Solution
2x + 1 < 17
2x + 1 < 17
⇒ 2x < 17 - 1 16
⇒ x <2
⇒ x < 8
But {x : x E N; N < 10}
Therefore, solution set x = {1,2,3,4,5,6, 7}
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