oblicz.
[tex] \frac{4}{5} \times \frac{7}{9} [/tex]
[tex] \frac{3}{4} \times \frac{5}{8} [/tex]
[tex] \frac{5}{7} \times \frac{4}{11} [/tex]
[tex] \frac{8}{9} \times \frac{5}{7} [/tex]
[tex] \frac{9}{11} \times \frac{4}{5} [/tex]
[tex] \frac{5}{9} \times \frac{7}{9} [/tex]
klasa 5 matematyka z kluczem str.77
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