Ответ:

\(2\frac{2}{15}=\frac{32}{15},\quad 2\frac{7}{10}=\frac{27}{10}\).

\(\frac{32}{15}+\frac{27}{10}=\frac{91}{30}\), поэтому \(1\frac{2}{27}=\frac{29}{27}\).

Первая часть: \(\frac{91}{30}:\frac{29}{27}=\frac{91}{30}\cdot\frac{27}{29}=\frac{819}{290}\).

\(\frac{27}{10}-\frac{32}{15}=\frac{17}{30}\), а \(2\frac{3}{7}=\frac{17}{7}\).

Вторая часть: \(\frac{17}{30}:\frac{17}{7}=\frac{7}{30}\).

\(\frac{819}{290}-\frac{7}{30}=\frac{3983}{1450}\).

Ответ: \(\frac{3983}{1450}=2\frac{1083}{1450}\).