1. Вычислите: a) \(\frac{3}{4}+\frac{1}{11}\), b) \(\frac{3}{8}-\frac{1}{5}\), c) \(2-\frac{5}{6}\), d) \(\frac{8}{6}:\frac{9}{6}\).

Решение: a) \(\frac{3}{4}+\frac{1}{11}=\frac{33}{44}+\frac{4}{44}=\frac{37}{44}\), b) \(\frac{3}{8}-\frac{1}{5}=\frac{15}{40}-\frac{8}{40}=\frac{7}{40}\), c) \(2-\frac{5}{6}=\frac{12}{6}-\frac{5}{6}=\frac{7}{6}\), d) \(\frac{8}{6}:\frac{9}{6}=\frac{8}{6}\times\frac{6}{9}=\frac{8}{9}\).