Question

-3 5/21:1 22/63+1 3/35:1 1/56. Помогите пожалуйста

Answer 1

Ответ:

$-1\frac{1}{3}$

Пошаговое объяснение:

$-3\frac{5}{21}:1\frac{22}{63}+1\frac{3}{35}:1\frac{1}{56}=-1\frac{1}{3}\\\\1) -3\frac{5}{21}:1\frac{22}{63}=-\frac{68}{21}:\frac{85}{63}=-\frac{68}{21}*\frac{63}{85}=-\frac{68}{1}*\frac{3}{85}=-\frac{12}{5}\\\\2)1\frac{3}{35}:1\frac{1}{56}=\frac{38}{35}:\frac{57}{56}=\frac{38}{35}*\frac{56}{57}=\frac{2128}{1995}=\frac{16}{15}\\\\3)-\frac{12}{5}+\frac{16}{15}=-\frac{36}{15}+\frac{16}{15}=-\frac{20}{15}=-\frac{4}{3}=-1\frac{1}{3}$