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```Chapter 5: Operations on Rational Numbers Exercise – 5.1

Question: 1    Solution: We have,  We have,  We have,  We have, Question: 2    Solution: If p/q and r/s are two rational numbers such that q and s do not have a common factor  If p/q and r/s are two rational numbers such that q and s do not have a common factor  LCM of 27 and 18 is 54  LCM of 4 and 8 is 4 Question: 3

Simplify    Solution:  LCM of 5 and 10 is 10  LCM of 16 and 24 is 48   LCM of 12 and 15 is 60  LCM of 19 and 57 is 57 Question: 4

Add and express the sum as a mixed fraction:   Solution: LCM of 5 and 10 is 10  LCM of 7 and 4 is 28   ```  ### Course Features

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