Odpowiedź:
Poziom A
[tex]a) \frac{2}{7} * \frac{4}{9} = \frac{8}{63} \\\\b) \frac{3}{5} * \frac{4}{11} = \frac{12}{55} \\\\c) \frac{7}{11} * \frac{7}{10} = \frac{49}{110} \\[/tex]
Poziom B
[tex]a) \frac{1}{9} * \frac{3}{5} = \frac{1}{3} * \frac{1}{5} = \frac{1}{15}\\\\b) \frac{4}{7} * \frac{14}{15} = \frac{4}{1} * \frac{2}{15} = \frac{8}{15}\\\\c) \frac{4}{9} * \frac{1}{8} = \frac{1}{9} * \frac{1}{2} = \frac{1}{18}\\[/tex]
Poziom C
[tex]a) \frac{3}{7} * \frac{14}{27} = \frac{1}{1} * \frac{2}{9} = \frac{2}{9}\\\\\\\b) \frac{3}{5} * \frac{15}{24} = \frac{1}{1} * \frac{3}{8} = \frac{3}{8}\\\\\\\c) \frac{7}{12} * \frac{3}{7} = \frac{1}{4} * \frac{1}{1} = \frac{1}{4}\\[/tex]