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प्रश्न
Re-arrange suitably and find the sum in each of the following:
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उत्तर
\[(\frac{- 6}{7} + \frac{- 15}{7}) + \frac{- 5}{6} + \frac{- 4}{9}\]
\[ = \left( \frac{- 6 - 15}{7} \right) + \frac{- 5}{6} + \frac{- 4}{9}\]
\[ = \frac{- 21}{7} + \frac{- 5}{6} + \frac{- 4}{9}\]
\[ = \frac{- 378 - 105 - 56}{126}\]
\[ = \frac{- 539}{126}\]
\[ = \frac{- 77}{18}\]
संबंधित प्रश्न
Evaluate each of the following:
What number should be added to \[\frac{- 5}{7}\] to get\[\frac{- 2}{3}?\]
Simplify:
Fill in the blanks:
If a is reciprocal of b, then the reciprocal of b is .....
The cost of \[7\frac{2}{3}\] metres of rope is Rs \[12\frac{3}{4} .\]
Find its cost per metre.
Divide the sum of \[\frac{- 13}{5}\] and \[\frac{12}{7}\] by the product of\[\frac{- 31}{7} \text{and} \frac{- 1}{2} .\]
Arrange the following rational numbers in ascending order.
`(7)/(4), (-6)/(5) and (-5)/(2)`
The table shows the portion of some common materials that are recycled.
| Material | Recycled |
| Paper | `5/11` |
| Aluminium cans | `5/8` |
| Glass | `2/5` |
| Scrap | `3/4` |
Arrange the rate of recycling the materials from the greatest to the smallest.
Write the following numbers in the form `p/q`, where p and q are integers:
Three and half
Write the rational number whose numerator and denominator are respectively as under:
35 ÷ (–7) and 35 – 18
