Question

Вычислите: $- frac{6}{7} -(- frac{4}{14} -3 frac{10}{21} )$

Answer 1

-3/14-3 10/21=-3 (-9-20)42=-3 29/42
-6/7-(-3 29/42)=-3 (-36+29)/42= -3 7/42=-3 1/6