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Question

Evaluate: 23+-45+13+25


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Solution

Firstly group the rational numbers with same denominators

23+13+-45+25=2+13+-4+25=33+-25=1-25

By taking LCM for 1 and 5 we get, 5

1×51×5-2×15×1=55-25=5-25=35

Hence, 23+-45+13+25 is 35.


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