Задание
Найдите пропущенные числа:
| \(\displaystyle \frac{3}{4}-\frac{2}{7}=\) |
[ ]\(\displaystyle \cdot \,3\)
\(\displaystyle 7\cdot 4\) | \(\displaystyle -\) |
\(\displaystyle 2\, \cdot\)[ ]
\(\displaystyle 7\cdot 4\) | \(\displaystyle =\) |
[ ] |