Odpowiedź:
[tex]1 \frac{1}{2} \times \frac{4}{5} = \frac{3}{2} \times \frac{4}{5} = \frac{6}{5} = 1 \frac{1}{5} [/tex]
[tex]2 \frac{1}{4} \times \frac{5}{6} \times 1 \frac{3}{5} = \frac{9}{4} \times \frac{5}{6} \times \frac{8}{5} = \frac{9}{4} \times \frac{4}{3} = 3[/tex]
[tex] \frac{1}{2} \div \frac{3}{4} = \frac{1}{2} \times \frac{4}{3} = \frac{2}{3} [/tex]
[tex]1 \frac{1}{3} \div 1 \frac{1}{2} = \frac{4}{3} \times \frac{2}{3} = \frac{8}{9} [/tex]
