Ответ:
- а) \(5\frac{7}{15}-2\frac{3}{15}-\frac{13}{15}=5\frac{7}{15}-3\frac{1}{15}=2\frac{6}{15}=2\frac{2}{5}\).
- б) \(9\frac{1}{7}-\left(3\frac{4}{7}+2\frac{6}{7}\right)=9\frac{1}{7}-6\frac{10}{7}=9\frac{1}{7}-7\frac{3}{7}=1\frac{5}{7}\).
- в) \(\left(7-3\frac{3}{10}\right)+2\frac{9}{10}=3\frac{7}{10}+2\frac{9}{10}=6\frac{6}{10}=6\frac{3}{5}\).
Ответ: а) \(2\frac{2}{5}\); б) \(1\frac{5}{7}\); в) \(6\frac{3}{5}\).
