Odpowiedź:
[tex]7)\ \ 3\frac{1}{2}-1\frac{5}{6}=3\frac{3}{6}-1\frac{5}{6}=2\frac{9}{6}-1\frac{5}{6}=1\frac{4}{6}=1\frac{2}{3}\\\\\\8)\ \ 4\frac{6}{10}-2\frac{2}{5}=4\frac{3}{5}-2\frac{2}{5}=2\frac{1}{5}\\\\\\9)\ \ 5\frac{13}{15}-2\frac{3}{10}=5\frac{26}{30}-2\frac{9}{30}=3\frac{17}{30}\\\\\\10)\ \ 12\frac{2}{3}-6\frac{1}{5}-1\frac{1}{10}=12\frac{20}{30}-6\frac{6}{30}-1\frac{3}{30}=6\frac{14}{30}-1\frac{3}{30}=5\frac{11}{30}[/tex]
