Ответ:
- \(14\frac{9}{13}-1\frac{5}{13}+12\frac{11}{13}=25\frac{15}{13}=26\frac{2}{13}\).
- \(7\frac{21}{25}-3\frac{12}{25}-1\frac{7}{25}=2\frac{2}{25}\).
- \(17\frac{7}{10}+3\frac{9}{10}-\frac{17}{10}=19\).
- \(28\frac{15}{40}-13\frac{19}{40}-1\frac{30}{40}=13\frac{6}{40}=13\frac{3}{20}\).
Ответ: а) 26\(\frac{2}{13}\); б) 2\(\frac{2}{25}\); в) 19; г) 13\(\frac{3}{20}\).
