2. Вычислите: 1) 4 13/17 + 5 4/17; 2) 3 8/11 + 2 6/11; 3) 1 − 16/21; 4) 5 − 2 3/8; 5) 8 4/9 − 3 7/9; 6) 12 19/44 − 6 37/44.

1. \(4\frac{13}{17}+5\frac{4}{17}=9\frac{17}{17}=10\).
2. \(3\frac{8}{11}+2\frac{6}{11}=5\frac{14}{11}=6\frac{3}{11}\).
3. \(1-\frac{16}{21}=\frac{21}{21}-\frac{16}{21}=\frac{5}{21}\).
4. \(5-2\frac{3}{8}=4\frac{8}{8}-2\frac{3}{8}=2\frac{5}{8}\).
5. \(8\frac{4}{9}-3\frac{7}{9}=7\frac{13}{9}-3\frac{7}{9}=4\frac{6}{9}=4\frac{2}{3}\).
6. \(12\frac{19}{44}-6\frac{37}{44}=11\frac{63}{44}-6\frac{37}{44}=5\frac{26}{44}=5\frac{13}{22}\).

Ответ: 1) \(10\); 2) \(6\frac{3}{11}\); 3) \(\frac{5}{21}\); 4) \(2\frac{5}{8}\); 5) \(4\frac{2}{3}\); 6) \(5\frac{13}{22}\).