Odpowiedź:
[tex]\huge\boxed{\boxed{1)=1\frac{8}{15}}}[/tex]
[tex]\huge\boxed{\boxed{2)=3\frac{10}{21}}}[/tex]
Szczegółowe wyjaśnienie:
[tex]4\frac{1}{5}-2\frac{2}{3}=4\frac{1\cdot3}{5\cdot3}-2\frac{2\cdot5}{3\cdot5}=4\frac{3}{15}-2\frac{10}{15}=3\frac{18}{15}-2\frac{10}{15}=1\frac{8}{15}\\\\5\frac{1}{7}-1\frac{2}{3}=5\frac{1\cdot3}{7\cdot3}-1\frac{2\cdot7}{3\cdot7}=5\frac{3}{21}-1\frac{14}{21}=4\frac{24}{21}-1\frac{14}{21}=3\frac{10}{21}[/tex]
