2. Вычисли: 1) \frac{5}{8}+\frac{2}{8}; 2) \frac{5}{8}-\frac{2}{8}; 3) 2\frac{2}{4}+4; 4) 6-1\frac{7}{11}; 5) 8\frac{3}{7}-6\frac{2}{7}; 6) 4:13; 7) 13:4; 8) \frac{5}{10}+\frac{7}{10}; 9) 10\frac{4}{9}-5\frac{6}{9}

Выполним вычисления:

1. \(\frac{5}{8}+\frac{2}{8} = \frac{5+2}{8} = \frac{7}{8}\)
2. \(\frac{5}{8}-\frac{2}{8} = \frac{5-2}{8} = \frac{3}{8}\)
3. \(2\frac{2}{4}+4 = 2\frac{1}{2} + 4 = 6\frac{1}{2} = 6.5\)
4. \(6-1\frac{7}{11} = 5\frac{11}{11} - 1\frac{7}{11} = 4\frac{11-7}{11} = 4\frac{4}{11}\)
5. \(8\frac{3}{7}-6\frac{2}{7} = (8-6) + (\frac{3}{7}-\frac{2}{7}) = 2\frac{1}{7}\)
6. \(4:13 = \frac{4}{13}\)
7. \(13:4 = \frac{13}{4} = 3\frac{1}{4}\)
8. \(\frac{5}{10}+\frac{7}{10} = \frac{5+7}{10} = \frac{12}{10} = \frac{6}{5} = 1\frac{1}{5}\)
9. \(10\frac{4}{9}-5\frac{6}{9} = 9\frac{13}{9} - 5\frac{6}{9} = 4\frac{7}{9}\)

Ответ:

1. \(\frac{7}{8}\)
2. \(\frac{3}{8}\)
3. \(6\frac{1}{2}\)
4. \(4\frac{4}{11}\)
5. \(2\frac{1}{7}\)
6. \(\frac{4}{13}\)
7. \(3\frac{1}{4}\)
8. \(1\frac{1}{5}\)
9. \(4\frac{7}{9}\)