Odpowiedź :
[tex]1\frac{5}{6} - 2*\frac{3}{4} = \frac{11}{6} - \frac{3}{2} = \frac{11}{6} - \frac{9}{6} = \frac{2}{6} = \frac{1}{3}[/tex]
[tex](\frac{3}{7}) ^{2} = \frac{9}{49} \\[/tex]
[tex]\frac{4}{5} : 2 = \frac{4}{5} * \frac{1}{2} = \frac{2}{5}[/tex]