2. Найдите значение выражения 10$$\frac{7}{15}$$\\: ($$\frac{3}{8}$$-$$\frac{1}{5}$$).

1) $$\frac{3}{8}$$ - $$\frac{1}{5}$$ = $$\frac{3 \cdot 5}{8 \cdot 5}$$ - $$\frac{1 \cdot 8}{5 \cdot 8}$$ = $$\frac{15}{40}$$ - $$\frac{8}{40}$$ = $$\frac{15-8}{40}$$ = $$\frac{7}{40}$$

2) 10$$\frac{7}{15}$$ : $$\frac{7}{40}$$ = $$\frac{10 \cdot 15 + 7}{15}$$ : $$\frac{7}{40}$$ = $$\frac{157}{15}$$ : $$\frac{7}{40}$$ = $$\frac{157}{15}$$ $$\cdot$$ $$\frac{40}{7}$$ = $$\frac{157}{3 \cdot 5}$$ $$\cdot$$ $$\frac{8 \cdot 5}{7}$$ = $$\frac{157}{3}$$ $$\cdot$$ $$\frac{8}{7}$$ = $$\frac{157 \cdot 8}{3 \cdot 7}$$ = $$\frac{1256}{21}$$ = 59$$\frac{17}{21}$$

Ответ: 59$$\frac{17}{21}$$