1.

1). 42/252). 51/253). 63/504). 82/75

Answer»

$(\begin{array}{l}\frac{2}{5} \TIMES \frac{4}{5} - \frac{8}{5} \div \frac{3}{5} + \frac{6}{5} \times \frac{9}{5} \div \frac{3}{5} = \;?\\ \Rightarrow \frac{2}{5} \times \frac{4}{5} - \frac{8}{5} \times \frac{5}{3} + \frac{6}{5} \times \frac{9}{5} \times \frac{5}{3} = \;?\end{array})$

$(\begin{array}{l} \Rightarrow \frac{8}{{25}} - \frac{8}{3} + \frac{{18}}{5} = \;?\\ \Rightarrow \frac{{98}}{{25}} - \frac{8}{3} = \;?\end{array})$

∴ ? = 94/75



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