Odpowiedź:
7/9 : 2/3 * 6/7 = 7/9 * 3/2 * 6/7 = 7/6 * 6/7 = 1
[tex]\frac{7}{9}:\frac{2}{3}\cdot\frac{6}{7} = \frac{7}{9}\cdot\frac{3}{2}\cdot\frac{6}{7} =\frac{7}{7}\cdot\frac{3}{9}\cdot\frac{6}{2} = 1\cdot\frac{1}{3}\cdot3 = 1[/tex]
