Oblicz. 1 tex] frac{2}{7} [/latex] - [latex] frac{1}{2} [/latex] = 6 [latex] frac{1}{6} [/latex] - 3[latex] frac{3}{8} [/latex] = 9 [latex] frac{5}{8} [/latex] - 5[latex] frac{7}{10} [/latex] =  UWAGA ! NIE PODAWAJCIE SAMEGO WYNIKU, DAWAJCIE OBLICZENIA

[latex]1 frac{2}{7} - frac{1}{2} =1 frac{4}{14} - frac{7}{14} = frac{18}{14} - frac{7}{14}=frac{11}{14}[/latex] [latex]6 frac{1}{6} - 3 frac{3}{8} =6 frac{4}{24} - 3 frac{9}{24} =5 frac{28}{24} - 3 frac{9}{24} = 2 frac{19}{24}[/latex] [latex]9 frac{5}{8} - 5 frac{7}{10} =9 frac{25}{40} - 5 frac{28}{40}=8 frac{65}{40} - 5 frac{28}{40}=3 frac{37}{40}[/latex]