4. Вычисли: −(3/5 − 7/10) : (−9/14) − 11/6.

\( \frac{3}{5}-\frac{7}{10}=-\frac{1}{10} \).

\( -\left(-\frac{1}{10}\right):\left(-\frac{9}{14}\right)=\frac{1}{10}\cdot\left(-\frac{14}{9}\right)=-\frac{7}{45} \).

\( -\frac{7}{45}-\frac{11}{6}=-\frac{151}{90} \).

Ответ: \(-\frac{151}{90}\).