2. Выполните действия: ($$-\frac{5}{12}$$ + $$\frac{11}{16}$$) : (-$$\frac{13}{72}$$) ($$\frac{7}{16}$$ - $$\frac{31}{40}$$) : ($$\frac{17}{24}$$ + $$\frac{27}{40}$$)

1) ($$\frac{-5}{12}$$ + $$\frac{11}{16}$$) : ($$\frac{-13}{72}$$) = ($$\frac{-20}{48}$$ + $$\frac{33}{48}$$) : ($$\frac{-13}{72}$$) = $$\frac{13}{48}$$ : ($$\frac{-13}{72}$$) = $$\frac{13}{48}$$ * $$\frac{-72}{13}$$ = $$\frac{1}{48}$$ * $$\frac{-72}{1}$$ = -$$\frac{3}{2}$$ или -1,5 2) ($$\frac{7}{16}$$ - $$\frac{31}{40}$$) : ($$\frac{17}{24}$$ + $$\frac{27}{40}$$) = ($$\frac{35}{80}$$ - $$\frac{62}{80}$$) : ($$\frac{85}{120}$$ + $$\frac{81}{120}$$) = ($$\frac{-27}{80}$$) : ($$\frac{166}{120}$$) = $$\frac{-27}{80}$$ * $$\frac{120}{166}$$ = $$\frac{-27}{2}$$ * $$\frac{3}{166}$$ = -$$\frac{81}{332}$$