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प्रश्न
Re-arrange suitably and find the sum in each of the following:
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उत्तर
\[(\frac{- 6}{7} + \frac{- 15}{7}) + \frac{- 5}{6} + \frac{- 4}{9}\]
\[ = \left( \frac{- 6 - 15}{7} \right) + \frac{- 5}{6} + \frac{- 4}{9}\]
\[ = \frac{- 21}{7} + \frac{- 5}{6} + \frac{- 4}{9}\]
\[ = \frac{- 378 - 105 - 56}{126}\]
\[ = \frac{- 539}{126}\]
\[ = \frac{- 77}{18}\]
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संबंधित प्रश्न
Simplify:
Re-arrange suitably and find the sum in each of the following:
What number should be added to \[\frac{- 5}{7}\] to get\[\frac{- 2}{3}?\]
Multiply:
Simplify:
Divide:
Write any three rational number between the two number given below.
0.3 and -0.5
Insert a rational number between:
`(5)/(9) and (6)/(7)`
Arrange the following rational numbers in descending order.
`(-7)/(10), (-8)/(15) and (-11)/(30)`
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` |
- Is the rational number expressing the amount of paper recycled more than `1/2` or less than `1/2`?
- Which items have a recycled amount less than `1/2`?
- Is the quantity of aluminium cans recycled more (or less) than half of the quantity of aluminium cans?
- Arrange the rate of recycling the materials from the greatest to the smallest.
