3. Выполните действие: a. (1$$\frac{1}{24}$$ - $$\frac{5}{12}$$)×(4$$\frac{1}{8}$$ - 3$$\frac{5}{24}$$).

a. Выполним действия:

1. 1$$\frac{1}{24}$$ - $$\frac{5}{12}$$ = $$\frac{25}{24}$$ - $$\frac{10}{24}$$ = $$\frac{15}{24}$$ = $$\frac{5}{8}$$
2. 4$$\frac{1}{8}$$ - 3$$\frac{5}{24}$$ = 4$$\frac{3}{24}$$ - 3$$\frac{5}{24}$$ = 3$$\frac{27}{24}$$ - 3$$\frac{5}{24}$$ = $$\frac{22}{24}$$ = $$\frac{11}{12}$$
3. $$\frac{5}{8}$$ × $$\frac{11}{12}$$ = $$\frac{5 × 11}{8 × 12}$$ = $$\frac{55}{96}$$

Ответ: $$\frac{55}{96}$$