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प्रश्न
Add: `(-2)/5 "and" 3/7`
योग
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उत्तर
`(-2)/5 "and" 3/7`
`= (- 2 xx 7)/(5 xx 7) + (3 xx 5)/(7 xx 5)`
(∵ L.C.M. of 5 and 7 = 35)
`= (-14)/35 + 15/35`
`= (-14 + 15)/35 = 1/35`
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