Obliczenia
[tex]1\frac{2}{5}+\frac{1}{3}=1\frac{6}{15}+\frac{5}{15}=1\frac{11}{15}\\\\2\frac{3}{8}-\frac{5}{7}=2\frac{21}{56}-\frac{40}{56}=1\frac{77}{56}-\frac{40}{56}=1\frac{37}{56}\\\\1\frac{3}{5}\cdot\frac{5}{8}=\frac{8}{5}\cdot\frac{5}{8}=\frac{40}{40}=1\\\\2\frac{1}{3}:1\frac{5}{6}=\frac{7}{3}:\frac{11}{6}=\frac{7}{3}\cdot\frac{6}{11}=\frac{42}{33}=\frac{14}{11}=1\frac{3}{11}[/tex]
