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प्रश्न
What number should be added to \[\frac{- 5}{7}\] to get\[\frac{- 2}{3}?\]
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उत्तर
\[\text{Let x be added .} \]
\[ \therefore x + \frac{- 5}{7} = \frac{- 2}{3}\]
\[ \Rightarrow x = \frac{- 2}{3} - \frac{- 5}{7}\]
\[ \Rightarrow x = \frac{- 14}{21} - \frac{- 15}{21}\]
\[ \Rightarrow x = \frac{- 14 - ( - 15)}{21}\]
\[ \Rightarrow x = \frac{- 14 + 15}{21}\]
\[ \Rightarrow x = \frac{1}{21}\]
संबंधित प्रश्न
Add the following rational numbers:
\[\frac{3}{4} and \frac{- 5}{8}\]
Subtract the first rational number from the second in each of the following:
Fill in the blanks:
The product of two positive rational numbers is always .....
Fill in the blanks:
The product of two negative rational numbers is always .....
Find two rational numbers between \[\frac{- 2}{9} \text{and} \frac{5}{9} .\]
State, True Or False
`7/9=(-7-5)/(9-5)`
Insert one rational number between 7 and 8
Insert three rational number between:
-5 and -4
The diagram shows the wingspans of different species of birds. Use the diagram to answer the question given below:
| Golden eagle | Blue jay |
 |
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How much longer is the wingspan of a Golden eagle than the wingspan of a Blue jay?
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.
