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प्रश्न
Add the following rational numbers:
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उत्तर
\[\text{The L.C.M. of denominators 27 and 18 is 54} . \]
\[\text{Now, we will express} \frac{- 7}{27} \text{and} \frac{11}{18} \text{in the form in which they take the denominator 54} . \]
\[\frac{- 7 \times 2}{27 \times 2} = \frac{- 14}{54} \]
\[\frac{11 \times 3}{18 \times 3} = \frac{33}{54}\]
\[\frac{- 7}{27} + \frac{11}{18} = \frac{- 14}{54} + \frac{33}{54}\]
\[ = \frac{- 14 + 33}{54}\]
\[ = \frac{19}{54}\]
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| Where money goes | Fraction of allowance | |
| Manavi | Kuber | |
| Saving Account | `1/2` | `1/3` |
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| Left over | ? | ? |
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