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Q.9. Find : $\frac{- 4}{5} \times \frac{3}{7} + \frac{15}{5} \times \frac{- 14}{9}$

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- \frac{4}{5} \times \frac{3}{7} + \frac{15}{5} \times (- \frac{14}{9}) = [- \frac{4}{5} \times \frac{3}{7}] + [\frac{15}{5} \times (- \frac{14}{9})] = - \frac{12}{35} - \frac{14}{3} [Apply BODMAS] = \frac{(- 12 \times 3) - (14 \times 35)}{105} = \frac{- 36 - 490}{105} = \frac{- 526}{105}

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