Odpowiedź:
[tex]1 \frac{2}{3} \times 1 \frac{3}{4} = \frac{5}{3} \times \frac{7}{4} = \frac{35}{12} = 2 \frac{11}{12} [/tex]
[tex]2 \frac{2}{3} \times 1 \frac{1}{5} = \frac{8}{3} \times \frac{6}{5} = \frac{16}{5} = 3 \frac{1}{5} [/tex]
[tex]\frac{7}{8} \div \frac{2}{7} = \frac{7}{8} \times \frac{7}{2} = \frac{49}{16} = 3 \frac{1}{16}[/tex]
[tex]1 \frac{2}{4} \times 1 \frac{2}{5} = \frac{6}{4} \times \frac{7}{5} = \frac{42}{20} = 2 \frac{2}{20} = 2 \frac{1}{10} [/tex]
[tex]2 \frac{2}{3} \div 1 \frac{2}{9} = \frac{8}{3} \times \frac{9}{11} = \frac{24}{33} = \frac{8}{11} [/tex]
