4. $(8\frac{5}{7}-5\frac{8}{9})\cdot(1\frac{5}{12}+3\frac{1}{4}):5\frac{1}{3}$

Question

$Фото задания: 4. $(8\frac{5}{7}-5\frac{8}{9})\cdot(1\frac{5}{12}+3\frac{1}{4}):5\frac{1}{3}$$ Фото задания

Accepted Answer

$8\frac{5}{7}-5\frac{8}{9}=\frac{61}{7}-\frac{53}{9}=\frac{178}{63}$.

$1\frac{5}{12}+3\frac{1}{4}=\frac{17}{12}+\frac{13}{4}=\frac{14}{3}$.

$\frac{178}{63}\cdot\frac{14}{3}:\frac{16}{3}=\frac{89}{72}$.

Ответ: $\frac{89}{72}$.

4. \((8\frac{5}{7}-5\frac{8}{9})\cdot(1\frac{5}{12}+3\frac{1}{4}):5\frac{1}{3}\)