Вычислите: 3 2/7 + 5 3/14; 7 3/8 + 1 5/6; 7 + 3 5/8; 2/3 + 4 3/5.

1. \(3\frac{2}{7}+5\frac{3}{14}=3\frac{4}{14}+5\frac{3}{14}=8\frac{7}{14}=8\frac{1}{2}\).
2. \(7\frac{3}{8}+1\frac{5}{6}=8+\frac{9}{24}+\frac{20}{24}=8+\frac{29}{24}=9\frac{5}{24}\).
3. \(7+3\frac{5}{8}=10\frac{5}{8}\).
4. \(\frac{2}{3}+4\frac{3}{5}=4+\frac{10}{15}+\frac{9}{15}=5\frac{4}{15}\).

Ответ: 8 1/2; 9 5/24; 10 5/8; 5 4/15.