Question

using appropriate properties find :
-2/3 * 3/5 +5/2 -3/5 *1/6
(use associative property )

Answer 1

$\frac{ - 2}{3} \times \frac{3}{5} + \frac{5}{2} - \frac{3}{5} \times \frac{1}{6} \\ = \frac{ - 2}{5} + \frac{5}{2} - \frac{1}{10} \\ = \frac{ ( - 2 \times 2) + (5 \times 5) - 1}{10} \\ = \frac{ - 4 + 25 - 1}{10} = \frac{20}{10} = 2$

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