14. Вычислите: $$1 \frac{3}{10} - (4 - 2 \frac{1}{3}) : 1 \frac{3}{7} + \frac{1}{5}$$

Решение: 1. $$4 - 2 \frac{1}{3} = 4 - \frac{7}{3} = \frac{12}{3} - \frac{7}{3} = \frac{5}{3}$$ 2. $$1 \frac{3}{7} = \frac{10}{7}$$ 3. $$\frac{5}{3} : \frac{10}{7} = \frac{5}{3} * \frac{7}{10} = \frac{35}{30} = \frac{7}{6}$$ 4. $$1 \frac{3}{10} = \frac{13}{10}$$ 5. $$\frac{13}{10} - \frac{7}{6} = \frac{39}{30} - \frac{35}{30} = \frac{4}{30} = \frac{2}{15}$$ 6. $$\frac{2}{15} + \frac{1}{5} = \frac{2}{15} + \frac{3}{15} = \frac{5}{15} = \frac{1}{3}$$ Ответ: $$\frac{1}{3}$$