Question

Найдите значение выражения
(11/21-6/7):5/42

Answer 1

$frac{11}{21} - frac{6}{7} = frac{11}{21} - frac{18}{21} = - frac{7}{21} = - frac{1}{3}$

$- frac{1}{3} div frac{5}{42} = - frac{1}{3} times frac{42}{5} = - frac{14}{5} \ = - 2 frac{4}{5} = - 2.8$