б) Решим уравнение:
$$\frac{1}{4}y - \frac{1}{4} = \frac{1}{2}$$
$$\frac{1}{4}y = \frac{1}{2} + \frac{1}{4}$$
$$\frac{1}{4}y = \frac{1 \cdot 2}{2 \cdot 2} + \frac{1}{4}$$
$$\frac{1}{4}y = \frac{2}{4} + \frac{1}{4}$$
$$\frac{1}{4}y = \frac{3}{4}$$
$$y = \frac{3}{4}: \frac{1}{4}$$
$$y = \frac{3}{4} \cdot \frac{4}{1}$$
$$y = 3$$
Ответ: 3