Odpowiedź:
[tex]6-\frac{3}{7}=5\frac{7}{7}-\frac{3}{7}=5\frac{4}{7}\\\\10-9\frac{2}{5}=9\frac{5}{5}-9\frac{2}{5}=\frac{3}{5}\\\\\frac{7}{8}-\frac{2}{3}=\frac{21}{24}-\frac{16}{24}=\frac{5}{24}\\\\1\frac{3}{4}-1\frac{1}{5}=1\frac{15}{20}-1\frac{4}{20}=\frac{11}{20}[/tex]
