Oblicz : 2-5/8 ,5-2/5 ,3 2/5-14/5 ,5 1/6-2 5/6
2-\frac{5}{8}=1\frac{3}{8}
5-\frac{2}{5}=4\frac{3}{5}
3\frac{2}{5}-\frac{14}{5}=\frac{17}{5}-\frac{14}{5}=\frac{3}{5}
5\frac{1}{6}-2\frac{5}{6}=4\frac{7}{6}-2\frac{5}{6}=2\frac{2}{6}=2\frac{1}{3}