2. Вычислите:
а) $$ \frac{55}{48}: (\frac{11}{16} + \frac{3}{32}) - \frac{14}{15} \cdot \frac{5}{7} = \frac{55}{48}: (\frac{11 \cdot 2}{16 \cdot 2} + \frac{3}{32}) - \frac{14 \cdot 5}{15 \cdot 7} = \frac{55}{48}: (\frac{22}{32} + \frac{3}{32}) - \frac{2 \cdot 1}{3 \cdot 1} = \frac{55}{48}: \frac{25}{32} - \frac{2}{3} = \frac{55}{48} \cdot \frac{32}{25} - \frac{2}{3} = \frac{55 \cdot 32}{48 \cdot 25} - \frac{2}{3} = \frac{11 \cdot 2}{3 \cdot 5} - \frac{2}{3} = \frac{22}{15} - \frac{2}{3} = \frac{22}{15} - \frac{2 \cdot 5}{3 \cdot 5} = \frac{22}{15} - \frac{10}{15} = \frac{12}{15} = \frac{4}{5} $$
Ответ: $$\frac{4}{5}$$