Выполни сложение: 1) 4 3/4 + 2 3/8; 2) 3 13/12 + 3 3/4; 3) 5 1/15 + 1 3/20; 4) 7/9 + 1 7/9; 5) 3/16 + 1/16; 6) 5 2/3 + 5 2/3; 7) 8/9 + 3; 8) 3 8/15 + 3 7/15.

1. \(4\frac{3}{4}+2\frac{3}{8}=4\frac{6}{8}+2\frac{3}{8}=6\frac{9}{8}=7\frac{1}{8}\).
2. \(3\frac{13}{12}+3\frac{3}{4}=3\frac{13}{12}+3\frac{9}{12}=6\frac{22}{12}=7\frac{5}{6}\).
3. \(5\frac{1}{15}+1\frac{3}{20}=6+\frac{4}{60}+\frac{9}{60}=6\frac{13}{60}\).
4. \(\frac{7}{9}+1\frac{7}{9}=1+\frac{14}{9}=2\frac{5}{9}\).
5. \(\frac{3}{16}+\frac{1}{16}=\frac{4}{16}=\frac{1}{4}\).
6. \(5\frac{2}{3}+5\frac{2}{3}=10+\frac{4}{3}=11\frac{1}{3}\).
7. \(\frac{8}{9}+3=3\frac{8}{9}\).
8. \(3\frac{8}{15}+3\frac{7}{15}=6+\frac{15}{15}=7\).

Ответ: 1) 7 1/8; 2) 7 5/6; 3) 6 13/60; 4) 2 5/9; 5) 1/4; 6) 11 1/3; 7) 3 8/9; 8) 7.