Вычислите значения выражений в столбце Б.

Решения для столбца Б: 1. $$\frac{1}{3} - \frac{1}{6} = \frac{2}{6} - \frac{1}{6} = \frac{1}{6}$$ 2. $$\frac{3}{20} + \frac{3}{4} = \frac{3}{20} + \frac{15}{20} = \frac{18}{20} = \frac{9}{10}$$ 3. $$\frac{7}{9} - \frac{2}{3} = \frac{7}{9} - \frac{6}{9} = \frac{1}{9}$$ 4. $$1\frac{1}{4} + \frac{1}{5} = \frac{5}{4} + \frac{1}{5} = \frac{25}{20} + \frac{4}{20} = \frac{29}{20} = 1\frac{9}{20}$$ 5. $$\frac{2}{5} + \frac{4}{15} = \frac{6}{15} + \frac{4}{15} = \frac{10}{15} = \frac{2}{3}$$ 6. $$1\frac{1}{3} + \frac{1}{4} = \frac{4}{3} + \frac{1}{4} = \frac{16}{12} + \frac{3}{12} = \frac{19}{12} = 1\frac{7}{12}$$ 7. $$\frac{2}{3} - \frac{2}{5} = \frac{10}{15} - \frac{6}{15} = \frac{4}{15}$$ 8. $$1\frac{1}{5} - \frac{1}{6} = \frac{6}{5} - \frac{1}{6} = \frac{36}{30} - \frac{5}{30} = \frac{31}{30} = 1\frac{1}{30}$$ 9. $$1\frac{1}{2} + \frac{1}{4} = \frac{3}{2} + \frac{1}{4} = \frac{6}{4} + \frac{1}{4} = \frac{7}{4} = 1\frac{3}{4}$$ 10. $$\frac{7}{6} - 1 = \frac{7}{6} - \frac{6}{6} = \frac{1}{6}$$ 11. $$1\frac{1}{2} + \frac{2}{7} = \frac{3}{2} + \frac{2}{7} = \frac{21}{14} + \frac{4}{14} = \frac{25}{14} = 1\frac{11}{14}$$ 12. $$\frac{1}{2} + \frac{1}{3} = \frac{3}{6} + \frac{2}{6} = \frac{5}{6}$$ 13. $$\frac{3}{4} - \frac{1}{8} = \frac{6}{8} - \frac{1}{8} = \frac{5}{8}$$ 14. $$\frac{5}{6} - \frac{7}{12} = \frac{10}{12} - \frac{7}{12} = \frac{3}{12} = \frac{1}{4}$$ 15. $$\frac{2}{5} + \frac{3}{10} = \frac{4}{10} + \frac{3}{10} = \frac{7}{10}$$