2. $(7\frac{2}{5}-3\frac{9}{10}):(2\frac{1}{3}+1\frac{5}{7})\cdot4\frac{1}{8}$

Question

$Фото задания: 2. $(7\frac{2}{5}-3\frac{9}{10}):(2\frac{1}{3}+1\frac{5}{7})\cdot4\frac{1}{8}$$ Фото задания

Accepted Answer

$7\frac{2}{5}-3\frac{9}{10}=\frac{37}{5}-\frac{39}{10}=\frac{7}{2}$.

$2\frac{1}{3}+1\frac{5}{7}=\frac{7}{3}+\frac{12}{7}=\frac{85}{21}$.

$\frac{7}{2}:\frac{85}{21}\cdot\frac{33}{8}=\frac{7}{2}\cdot\frac{21}{85}\cdot\frac{33}{8}=\frac{4851}{1360}$.

Ответ: $\frac{4851}{1360}$.

2. \((7\frac{2}{5}-3\frac{9}{10}):(2\frac{1}{3}+1\frac{5}{7})\cdot4\frac{1}{8}\)