Ответ:
- \(2\frac{2}{5}+\frac{3}{10}=2\frac{4}{10}+\frac{3}{10}=2\frac{7}{10}\).
- \(6\frac{7}{8}+\frac{5}{12}=6\frac{21}{24}+\frac{10}{24}=6+\frac{31}{24}=7\frac{7}{24}\).
- \(8\frac{1}{9}+2\frac{3}{5}=10+\frac{5}{45}+\frac{27}{45}=10+\frac{32}{45}=10\frac{32}{45}\).
- \(2\frac{2}{7}+5=7\frac{2}{7}\).
- \(6+2\frac{11}{19}=8\frac{11}{19}\).
- \(1-\frac{3}{7}=\frac{7}{7}-\frac{3}{7}=\frac{4}{7}\).
Ответ: а) \(2\frac{7}{10}\); б) \(7\frac{7}{24}\); в) \(10\frac{32}{45}\); г) \(7\frac{2}{7}\); д) \(8\frac{11}{19}\); е) \(\frac{4}{7}\).
