Ответ:
- \(\frac{3}{10}-\frac{2}{15}=\frac{9}{30}-\frac{4}{30}=\frac{5}{30}=\frac{1}{6}\).
- \(1\frac{4}{7}+2\frac{3}{21}=1\frac{4}{7}+2\frac{1}{7}=3\frac{5}{7}\).
- \(5\frac{1}{4}+3\frac{8}{11}=8+\frac{11}{44}+\frac{32}{44}=8\frac{43}{44}\).
- \(4-\frac{2}{3}=3\frac{1}{3}\).
- \(5\frac{1}{4}-3\frac{7}{8}=5\frac{2}{8}-3\frac{7}{8}=1\frac{3}{8}\).
Ответ: а) \(\frac{1}{6}\); б) \(3\frac{5}{7}\); в) \(8\frac{43}{44}\); г) \(3\frac{1}{3}\); д) \(1\frac{3}{8}\).
