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प्रश्न
Express each of the following as a rational number of the form \[\frac{p}{q}:\]
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उत्तर
\[\frac{6}{7} + 1 + \frac{- 7}{9} + \frac{19}{21} + \frac{- 12}{7}\]
\[ = \frac{54}{63} + \frac{63}{63} + \frac{- 49}{63} + \frac{57}{63} + \frac{- 108}{63}\]
\[ = \frac{54 + 63 + ( - 49) + 57 + ( - 108)}{63}\]
\[ = \frac{54 + 63 - 49 + 57 - 108}{63}\]
\[ = \frac{17}{63}\]
संबंधित प्रश्न
Add the following rational numbers:
Evaluate each of the following:
Multiply:
Find (x + y) ÷ (x − y), if
Divide the sum of \[\frac{- 13}{5}\] and \[\frac{12}{7}\] by the product of\[\frac{- 31}{7} \text{and} \frac{- 1}{2} .\]
State, true or false
`(-13)/25` is smaller than `(-25)/13`
Which of the following is not true?
For every rational number x, x × 0 = x.
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 rational number whose numerator and denominator are respectively as under:
25 + 15 and 81 ÷ 40
