Oblicz [latex]2- frac{1}{3} \ 2- frac{1}{2} [/latex] [latex] frac{3}{4} + frac{1}{8} \ frac{3}{4} - frac{1}{8} [/latex] [latex] frac{1}{2} - 1 frac{2}{5} \ frac{1}{2} - 1 frac{1}{5} [/latex] pomiędzy nimi jest kreska ułamkowa jak coś 

[latex]frac{ 2- frac{1}{3}}{ 2- frac{1}{2} }=frac{1frac{2}{3}}{1frac{1}{2}} =1frac{2}{3}:1frac{1}{2} = frac{5}{3}: frac{3}{2} = frac{5}{3}* frac{2}{3} = frac{10}{9}=1frac{1}{9}[/latex] [latex]frac{ frac{3}{4} + frac{1}{8}}{frac{3}{4} - frac{1}{8} }=frac{ frac{6}{8} + frac{1}{8}}{frac{6}{8} - frac{1}{8} }=frac{ frac{7}{8} }{frac{5}{8} }=frac{7}{8} :frac{5}{8} =frac{7}{8}*frac{8}{5} =frac{7}{5}[/latex] [latex]frac{ frac{1}{2} - 1 frac{2}{5}}{frac{1}{2} - 1 frac{1}{5} }= frac{ frac{5}{10} - 1 frac{4}{10}}{frac{5}{10} - 1 frac{2}{10} }= frac{ frac{5}{10} - 1 frac{4}{10}}{frac{5}{10} - 1 frac{2}{10} }= frac{ - frac{9}{10}}{ - frac{7}{10} }= frac{9}{10} : frac{7}{10} = frac{9}{10} * frac{10} {7}= frac{9}{7}=1frac{1}{7}[/latex]