Ответ:

\(1\frac{5}{6}=\frac{11}{6}\), \(1\frac{1}{3}=\frac{4}{3}\).

\(\frac{5}{12}-\frac{4}{3}=\frac{5}{12}-\frac{16}{12}=-\frac{11}{12}\).

\(\frac{11}{6}:\left(-\frac{11}{12}\right)=-2\).

Ответ: \(-2\).