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Multiplication and Division of Rational Numbers

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Question

Question 80 (i)

Find the product of $\frac{- 4}{5}$ and $\frac{- 5}{12}$ .

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Solution

Given, $\frac{- 4}{5} a n d \frac{- 5}{12} ∴ P r o d u c t o f r a t i o n a l n u m b e r s = \frac{P r o d u c t o f n u m e r a t o r s}{P r o d u c t o f d e n o m i n a t o r s} = \frac{(- 4) \times (- 5)}{5 \times 12} = \frac{20}{60} = \frac{20 \div 20}{60 \div 20} = \frac{1}{3}$

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Multiplication and Division of Rational Numbers

Standard VII Mathematics

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