2) 2\frac{3}{8} · 3\frac{1}{13} + 5\frac{5}{12} · 3\frac{1}{13} - 3\frac{1}{13}·1\frac{1}{6}.

2) 2$$\frac{3}{8}$$ $$\cdot$$ 3$$\frac{1}{13}$$ + 5$$\frac{5}{12}$$ $$\cdot$$ 3$$\frac{1}{13}$$ - 3$$\frac{1}{13}$$\cdot$$1$$\frac{1}{6}$$ = 3$$\frac{1}{13}$$ $$\cdot$$ (2$$\frac{3}{8}$$ + 5$$\frac{5}{12}$$ - 1$$\frac{1}{6}$$) = 3$$\frac{1}{13}$$ $$\cdot$$ (2 + 5 - 1 + $$\frac{3}{8}$$ + $$\frac{5}{12}$$ - $$\frac{1}{6}$$) = 3$$\frac{1}{13}$$ $$\cdot$$ (6 + $$\frac{3 \cdot 3}{8 \cdot 3}$$ + $$\frac{5 \cdot 2}{12 \cdot 2}$$ - $$\frac{1 \cdot 4}{6 \cdot 4}$$) = 3$$\frac{1}{13}$$ $$\cdot$$ (6 + $$\frac{9}{24}$$ + $$\frac{10}{24}$$ - $$\frac{4}{24}$$) = 3$$\frac{1}{13}$$ $$\cdot$$ (6 + $$\frac{9+10-4}{24}$$) = 3$$\frac{1}{13}$$ $$\cdot$$ (6 + $$\frac{15}{24}$$) = 3$$\frac{1}{13}$$ $$\cdot$$ (6 + $$\frac{5}{8}$$) = 3$$\frac{1}{13}$$ $$\cdot$$ 6$$\frac{5}{8}$$ = $$\frac{3 \cdot 13 + 1}{13}$$\cdot$$\frac{6 \cdot 8 + 5}{8}$$ = $$\frac{39 + 1}{13}$$\cdot$$\frac{48 + 5}{8}$$ = $$\frac{40}{13}$$\cdot$$\frac{53}{8}$$ = $$\frac{5 \cdot 8}{13}$$\cdot$$\frac{53}{8}$$ = $$\frac{5}{13}$$\cdot$$ 53 = $$\frac{5 \cdot 53}{13}$$ = $$\frac{265}{13}$$ = 20$$\frac{5}{13}$$

Ответ: 20$$\frac{5}{13}$$