Question

(2/3-3/7):10/21 = ?

решение и ответ

Answer 1

$( frac{2}{3} - frac{3}{7} ): frac{10}{21} = frac{14-9}{21} : frac{10}{21} = frac{5}{21}* frac{21}{10} = frac{5}{10} = frac{1}{2}$