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प्रश्न
Fill in the blanks:
\[- 4 \times \frac{7}{9} = \frac{7}{9} \times . . . . . .\]
योग
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उत्तर
\[- 4\]
\[x \times y = y \times x (\text{commutativity})\]
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संबंधित प्रश्न
Add the following rational numbers:
\[\frac{7}{- 18} and \frac{8}{27}\]
Subtract the first rational number from the second in each of the following:
\[\frac{- 8}{33}, \frac{- 7}{22}\]
Evaluate each of the following:
\[\frac{- 3}{- 8} - \frac{- 2}{7}\]
Fill in the branks:
\[. . . + \frac{15}{23} = 4\]
Simplify:
\[\frac{5}{6} + \frac{- 2}{5} - \frac{- 2}{15}\]
Multiply:
\[- \frac{15}{11} \text{by} 7\]
Simplify each of the following and express the result as a rational number in standard form:
\[\frac{- 13}{9} \times \frac{27}{- 26}\]
Insert a rational number between:
`(2)/(5) and (3)/(4)`
Arrange the following rational numbers in ascending order.
`(-7)/(12), (-3)/(10) and (-2)/(5)`
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 quantity of aluminium cans recycled more (or less) than half of the quantity of aluminium cans?
