Question

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

Answer 1

Ответ:

$-1frac{1}{3}$

Пошаговое объяснение:

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