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प्रश्न
Fill in the blanks:
\[\frac{- 4}{5} \times \left( \frac{5}{7} + \frac{- 8}{9} \right) = \left( \frac{- 4}{5} \times . . . . . \right) \times \frac{- 8}{9}\]
योग
उत्तर
\[ \frac{5}{7}\]
\[x \times (y \times z) = (x \times y) \times z (\text{associativity of multiplication} )\]
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