Question

Решите с решением пожалуйста​

Answer 1

$e) \frac{13}{24}*\frac{-2}{13}+\frac{5}{12}=\frac{-2}{24}+\frac{5}{12}=-\frac{1}{12}+\frac{5}{12}=\frac{5}{12}-\frac{1}{12}=\frac{4}{12}=\frac{1}{3}\\\\ f) \frac{7}{9}:\frac{2}{3}-\frac{5}{6}=\frac{7}{9}*\frac{3}{2}-\frac{5}{6}=\frac{7}{6}-\frac{5}{6}=\frac{2}{6}=\frac{1}{3}\\ \\e) \frac{3}{13}+\frac{57}{26}*\frac{4}{19}=\frac{3}{13}+\frac{3}{13}*\frac{2}{1}=\frac{3}{13}+\frac{6}{13}=\frac{9}{13}$

$f) \frac{7}{19}*5-\frac{4}{5}:\frac{76}{85}=\frac{35}{19}-\frac{4}{5}*\frac{85}{76}=\frac{35}{19}-\frac{17}{19}=\frac{18}{19}$