| Дроби | Общий знаменатель | Результат |
|---|---|---|
| $$\frac{1}{2} \text{ и } \frac{1}{4}$$ | 4 | $$\frac{2}{4} + \frac{1}{4} = \frac{3}{4}$$ |
| $$\frac{2}{3} \text{ и } \frac{1}{6}$$ | 6 | $$\frac{4}{6} + \frac{1}{6} = \frac{5}{6}$$ |
| $$\frac{1}{4} \text{ и } \frac{1}{5}$$ | 20 | $$\frac{5}{20} + \frac{4}{20} = \frac{9}{20}$$ |
| $$\frac{3}{8} \text{ и } \frac{1}{2}$$ | 8 | $$\frac{3}{8} + \frac{4}{8} = \frac{7}{8}$$ |
| $$\frac{2}{5} \text{ и } \frac{1}{3}$$ | 15 | $$\frac{6}{15} + \frac{5}{15} = \frac{11}{15}$$ |
| $$\frac{5}{6} \text{ и } \frac{3}{4}$$ | 12 | $$\frac{10}{12} + \frac{9}{12} = \frac{19}{12} = 1\frac{7}{12}$$ |
| $$\frac{1}{10} \text{ и } \frac{1}{15}$$ | 30 | $$\frac{3}{30} + \frac{2}{30} = \frac{5}{30} = \frac{1}{6}$$ |
| $$\frac{7}{12} \text{ и } \frac{5}{6}$$ | 12 | $$\frac{7}{12} + \frac{10}{12} = \frac{17}{12} = 1\frac{5}{12}$$ |
Ответ: см. таблицу выше