oblicz [latex][2 frac{3}{5}:3+(2 frac{1}{2}+3 frac{2}{7}-1 frac{2}{5}):12]+( frac{1}{2}+ frac{3}{11})= [/latex]

[latex][2 frac{3}{5}:3+(2 frac{1}{2}+3 frac{2}{7}-1 frac{2}{5}):12]+( frac{1}{2}+ frac{3}{11})=\\ [frac{13}{5}*frac{1}{3}+(2frac{7}{14}+3frac{4}{14}-1frac{2}{5}):12]+(frac{11}{22}+frac{6}{22})=\\ [frac{13}{15}+(5frac{11}{14}-1frac{2}{5}):12]+frac{17}{22}=\\ [frac{13}{15}+(5frac{55}{70}-1frac{28}{70}):12]+frac{17}{22}=\\ [frac{13}{15}+4frac{27}{70}:12]+frac{17}{22}=\\ [frac{13}{15}+frac{307}{70}*frac{1}{12}]+frac{17}{22}=[/latex] [latex] [frac{13}{15}+frac{307}{840}]+frac{17}{22}=\\ [frac{728}{840}+frac{307}{840}]+frac{17}{22}=\\frac{1035}{840}+frac{17}{22}=\\1frac{195}{840}+frac{17}{22}=\\1frac{2145}{9240}+frac{7140}{9240}=\\1frac{9285}{9240}=\\2frac{45}{9240}=\\2frac{3}{616}[/latex]