Ответ:
- \(\frac{3}{10}+\frac{2}{3}=\frac{9}{30}+\frac{20}{30}=\frac{29}{30}\).
- \(2\frac{1}{15}+\frac{3}{10}=2+\frac{2}{30}+\frac{9}{30}=2\frac{11}{30}\).
- \(\frac{3}{5}-\frac{4}{15}=\frac{9}{15}-\frac{4}{15}=\frac{5}{15}=\frac{1}{3}\).
- \(3\frac{1}{6}-1\frac{1}{3}=3\frac{1}{6}-1\frac{2}{6}=2\frac{7}{6}-1\frac{2}{6}=1\frac{5}{6}\).
Ответ: а) \(\frac{29}{30}\); б) \(2\frac{11}{30}\); в) \(\frac{1}{3}\); г) \(1\frac{5}{6}\).
