\[\boxed{\mathbf{2.}\mathbf{210}}\]
Пояснение.
Решение.
\[\textbf{а)}\ 1 - \frac{4}{5} = \frac{5}{5} - \frac{4}{5} = \frac{1}{5}\]
\[\textbf{б)}\ 2 - \frac{3}{7} = 1\frac{7}{7} - \frac{3}{7} = 1\frac{4}{7}\]
\[\textbf{в)}\ 7 - \frac{4}{13} = 6\frac{13}{13} - \frac{4}{13} = 6\frac{9}{13}\]
\[\textbf{г)}\ 6 - 1\frac{5}{9} = 5\frac{9}{9} - 1\frac{5}{9} = 4\frac{4}{9}\]
\[\textbf{д)}\ 9 - 3\frac{4}{7} = 8\frac{7}{7} - 3\frac{4}{7} = 5\frac{3}{7}\]
\[\textbf{е)}\ 5 - 4\frac{2}{11} = 4\frac{11}{11} - 4\frac{2}{11} = \frac{9}{11}\]