125. Решите уравнение ($$\frac{5}{8}$$y – 2$$\frac{3}{4}$$)8=3.

125. Решите уравнение ($$\frac{5}{8}$$y – 2$$\frac{3}{4}$$)8=3.

($$\frac{5}{8}$$y – 2$$\frac{3}{4}$$)8=3

$$\frac{5}{8}$$y – 2$$\frac{3}{4}$$ = 3:8

$$\frac{5}{8}$$y – 2$$\frac{3}{4}$$ = $$\frac{3}{8}$$

$$\frac{5}{8}$$y - $$\frac{11}{4}$$ = $$\frac{3}{8}$$

$$\frac{5}{8}$$y = $$\frac{3}{8}$$ + $$\frac{11}{4}$$

$$\frac{5}{8}$$y = $$\frac{3}{8}$$ + $$\frac{22}{8}$$

$$\frac{5}{8}$$y = $$\frac{25}{8}$$

y = $$\frac{25}{8}$$ : $$\frac{5}{8}$$

y = $$\frac{25}{8}$$\cdot$$\frac{8}{5}$$

y = 5

Ответ: y = 5