№26. Вычислите: 1) 6 5/13 + 2 8/13; 2) 5 7/13 + 3 6/7; 3) 1 − 15/19; 4) 8 − 3 4/9; 5) 7 3/8 − 2 5/8; 6) 14 19/32 − 9 19/32.

1. \(6\frac{5}{13}+2\frac{8}{13}=8+\frac{13}{13}=9\).
2. \(5\frac{7}{13}+3\frac{6}{7}=8+\frac{7}{13}+\frac{6}{7}=8+\frac{49+78}{91}=9\frac{36}{91}\).
3. \(1-\frac{15}{19}=\frac{4}{19}\).
4. \(8-3\frac{4}{9}=4\frac{5}{9}\).
5. \(7\frac{3}{8}-2\frac{5}{8}=4\frac{6}{8}=4\frac{3}{4}\).
6. \(14\frac{19}{32}-9\frac{19}{32}=5\).

Ответ: 1) 9; 2) 9\(\frac{36}{91}\); 3) \(\frac{4}{19}\); 4) 4\(\frac{5}{9}\); 5) 4\(\frac{3}{4}\); 6) 5.