Вычислите значение выражения наиболее удобным способом: 1) 3$$\frac{3}{7}$$\cdot$$2$$\frac{2}{13}$$+2$$\frac{1}{7}$$\cdot$$2$$\frac{2}{13}$$; 2) 2$$\frac{2}{9}$$\cdot$$7$$\frac{1}{5}$$+$$\frac{11}{12}$$\cdot$$7$$\frac{1}{5}$$-7$$\frac{1}{5}$$\cdot$$1$$\frac{3}{4}$$.

1) 3$$\frac{3}{7}$$\cdot$$2$$\frac{2}{13}$$+2$$\frac{1}{7}$$\cdot$$2$$\frac{2}{13}$$ = 2$$\frac{2}{13}$$\cdot$$(3$$\frac{3}{7}$$+2$$\frac{1}{7}$$) = 2$$\frac{2}{13}$$\cdot$$(3+2 + $$\frac{3}{7}$$+$$\frac{1}{7}$$) = 2$$\frac{2}{13}$$\cdot$$(5+$$\frac{4}{7}$$) = $$\frac{28}{13}$$\cdot$$5$$\frac{4}{7}$$ = $$\frac{28}{13}$$\cdot$$\frac{39}{7}$$ = $$\frac{4}{1}$$\cdot$$\frac{3}{1}$$ = 12

Ответ: 12

2) 2$$\frac{2}{9}$$\cdot$$7$$\frac{1}{5}$$+$$\frac{11}{12}$$\cdot$$7$$\frac{1}{5}$$-7$$\frac{1}{5}$$\cdot$$1$$\frac{3}{4}$$ = 7$$\frac{1}{5}$$\cdot$$(2$$\frac{2}{9}$$+$$\frac{11}{12}$$-1$$\frac{3}{4}$$) = 7$$\frac{1}{5}$$\cdot$$(2$$\frac{2}{9}$$+$$\frac{11}{12}$$-1$$\frac{9}{12}$$) = 7$$\frac{1}{5}$$\cdot$$(2$$\frac{2}{9}$$-$$\frac{9}{12}$$+$$\frac{11}{12}$$) = 7$$\frac{1}{5}$$\cdot$$(2$$\frac{2}{9}$$+$$\frac{2}{12}$$) = 7$$\frac{1}{5}$$\cdot$$(2$$\frac{2}{9}$$+$$\frac{1}{6}$$) = 7$$\frac{1}{5}$$\cdot$$(2$$\frac{4}{18}$$+$$\frac{3}{18}$$) = 7$$\frac{1}{5}$$\cdot$$(2$$\frac{7}{18}$$) = $$\frac{36}{5}$$\cdot$$\frac{43}{18}$$ = $$\frac{2}{5}$$\cdot$$\frac{43}{1}$$ = $$\frac{86}{5}$$ = 17$$\frac{1}{5}$$

Ответ: 17$$\frac{1}{5}$$