3. Решите уравнение $$y \div 7 = 5\frac{9}{28}$$.

$$y \div 7 = 5\frac{9}{28}$$

$$y = 7 \cdot 5\frac{9}{28}$$

$$y = 7 \cdot \frac{149}{28}$$

$$y = \frac{7 \cdot 149}{28}$$

$$y = \frac{149}{4}$$

$$y = 37\frac{1}{4}$$

Ответ: $$37\frac{1}{4}$$