Вычислите Б) $$5 - \frac{6}{7} = 4 \frac{1}{7}$$

Б)

$$5 - \frac{6}{7} = \frac{5 \times 7}{7} - \frac{6}{7} = \frac{35}{7} - \frac{6}{7} = \frac{35-6}{7} = \frac{29}{7} = 4 \frac{1}{7}$$