Question

(0,3-3/20)*2 2/9-2/5:1,4
Решите

Answer 1

$( \frac{3}{10} - \frac{3}{20} ) \times 2 \frac{2}{9} - \frac{2}{5} \div \frac{14}{10} = \frac{3}{10} \times \frac{20}{9} - \frac{4}{10} \times \frac{10}{14} = \frac{2}{3} - \frac{2}{7} = \frac{14 - 6}{21} = \frac{8}{21}$