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प्रश्न
What rational number should be subtracted from `5/8` to get `8/5`.
बेरीज
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उत्तर
The required number = `5/8 - 8/5`
| 2 | 8, 5 |
| 2 | 4, 5 |
| 2 | 2, 5 |
| 5 | 1, 5 |
| 1, 1 |
`= (5 xx 5)/(8 xx 5) - (8 xx 8)/(5 xx 8)`
(∵ L.C.M. of 8, 5 = 40)
`= (25 - 64)/40 = -39/40`
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संबंधित प्रश्न
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Find three rational numbers equivalent to `-5/9`
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Multiply: `3/25 "and" 4/5`
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Evaluate: `3 5/12 - 1 2/3`
By what rational number should we multiply `20/-9`, so that the product may be `(-5)/9`?
Evaluate: `(7/8 xx 24/21) + ((-5)/9 xx 6/-25)`
