Obliczenia
[tex]\frac{3}{7}\cdot\frac{5}{6}=\frac{\not3^1\cdot5}{7\cdot\not6_2}=\frac{5}{14}\\\\\frac{5}{7}\cdot\frac{3}{5}=\frac{\not5^1\cdot3}{7\cdot\not5_1}=\frac{3}{7}[/tex]
