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Inequalities
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Learn it An inequality uses < or > instead of =. Many values can make it true. Test a value by substituting it.
Example: Which of 6, 9, 12 make $n + 15 > 23$ true?
- 6 + 15 = 21: not greater than 23 ✗.
- 9 + 15 = 24 > 23 ✓.
- 12 + 15 = 27 > 23 ✓. So 9 and 12 work (any n > 8).
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