1⅓ -²/₉= 2⅗-⁷/₁₀= ⅗-½=

[latex] a)1frac{1}{3} - frac{2}{9}= frac{4}{3} - frac{2}{9}=frac{12}{9}- frac{2}{9}=frac{10}{9}=1frac{1}{9}\b) 2frac{2}{5}- frac{7}{10}= frac{12}{5}- frac{7}{10}= frac{24}{10}-frac{7}{10}= frac{17}{10}=1 frac{7}{10}\c) frac{3}{5}- frac{1}{2} = frac{6}{10}- frac{5}{10}= frac{1}{10}[/latex]   Pozdrawiam.