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प्रश्न
Evaluate: `- 2/3 - ((- 5)/7)`
बेरीज
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उत्तर
`- 2/3 - ((- 5)/7)`
`=> - 2/3 + 5/7`
| 3 | 3, 7 |
| 7 | 1, 7 |
| 1, 1 |
L.C.M. of 3 and 7 = 3 × 7 = 21
`=> (-2 xx 7)/(3 xx 7) + (5 xx 3)/(7 xx 3)`
(∵ L.C.M. of 3 and 7 = 21)
`= (-14 + 15)/21 = 1/21`
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