в. 5$$\frac{25}{36}$$-x = 1$$\frac{1}{12}$$+2$$\frac{3}{8}$$.

в. $$5\frac{25}{36}-x = 1\frac{1}{12}+2\frac{3}{8}$$

$$5\frac{25}{36}-x = 1\frac{2}{24}+2\frac{9}{24}$$

$$5\frac{25}{36}-x = 3\frac{11}{24}$$

$$5\frac{50}{72}-x = 3\frac{33}{72}$$

$$x=5\frac{50}{72}-3\frac{33}{72}$$

$$x=2\frac{17}{72}$$

Ответ: $$x=2\frac{17}{72}$$