2 Решите уравнение: a) $$b+5\frac{9}{10}=7\frac{5}{12}$$; y:8=$$4\frac{7}{48}$$

2. Решите уравнение:

a) $$b + 5\frac{9}{10} = 7\frac{5}{12}$$

$$b = 7\frac{5}{12} - 5\frac{9}{10}$$

$$b = 7\frac{25}{60} - 5\frac{54}{60}$$

$$b = 6\frac{85}{60} - 5\frac{54}{60}$$

$$b = 1\frac{31}{60}$$

Ответ: $$b = 1\frac{31}{60}$$

б) $$y : 8 = 4\frac{7}{48}$$

$$y = 4\frac{7}{48} \cdot 8$$

$$y = \frac{4 \cdot 48 + 7}{48} \cdot 8$$

$$y = \frac{199}{48} \cdot 8$$

$$y = \frac{199 \cdot 8}{48}$$

$$y = \frac{199 \cdot 8}{6 \cdot 8}$$

$$y = \frac{199}{6}$$

$$y = 33\frac{1}{6}$$

Ответ: $$y = 33\frac{1}{6}$$