14 2+53

Решим пример:

$$\begin{aligned}
2\frac{1}{2} + \frac{5}{8} : \frac{3}{4} + \frac{5}{6} = \frac{5}{2} + \frac{5}{8} \cdot \frac{4}{3} + \frac{5}{6} = \frac{5}{2} + \frac{5}{2} \cdot \frac{1}{3} + \frac{5}{6} = \frac{5}{2} + \frac{5}{6} + \frac{5}{6} = \frac{15 + 5 + 5}{6} = \frac{25}{6} = 4\frac{1}{6}
\end{aligned}$$

Ответ: $$4\frac{1}{6}$$