Задание
Найдите знаки:
| Числитель | |||
|---|---|---|---|
| [?||-]\(\displaystyle 2\) | [?||-]\(\displaystyle 4\) | ||
| Знаменатель | [?||-]\(\displaystyle 5\) | \(\displaystyle \frac{2}{5}\) | \(\displaystyle -\frac{4}{5}\) |
| \(\displaystyle 7\) | \(\displaystyle \frac{2}{7}\) | \(\displaystyle -\frac{4}{7}\) | |