1. Вычисли: \(-\frac{3}{4}\left[\frac{5}{6}-\left(-\frac{7}{3}+\frac{1}{2}\right)\right]+\frac{5}{8}:\\left(-\frac{15}{16}\right)\).

\(-\frac{7}{3}+\frac{1}{2}=-\frac{11}{6}\).

\(\frac{5}{6}-\left(-\frac{11}{6}\right)=\frac{16}{6}=\frac{8}{3}\).

\(-\frac{3}{4}\cdot\frac{8}{3}=-2\), а \(\frac{5}{8}:\left(-\frac{15}{16}\right)=-\frac{2}{3}\).

Ответ: \(-\frac{8}{3}\).