Вычислите: 9) 4 7/8 : (2 3/4 + 1 10/19).

\(4\frac{7}{8}=\frac{39}{8}\), \(2\frac{3}{4}=\frac{11}{4}\), \(1\frac{10}{19}=\frac{29}{19}\).

\(\frac{11}{4}+\frac{29}{19}=\frac{209+116}{76}=\frac{325}{76}\).

\(\frac{39}{8}:\frac{325}{76}=\frac{39}{8}\cdot\frac{76}{325}=\frac{39\cdot19}{2\cdot325}=\frac{741}{650}\).

Ответ: \(\frac{741}{650}=1\frac{91}{650}\).