Odpowiedź:
[tex]a) \: 2 \frac{2}{5} \times 1 \frac{3}{7} = \frac{12}{5} \times \frac{10}{7} = \frac{12}{1} \times \frac{2}{7} = \frac{24}{7} = 3 \frac{3}{7} [/tex]
[tex]b) \: 4 \frac{1}{3} \times 2 \frac{2}{5} = \frac{13}{3} \times \frac{12}{5} = \frac{13}{1} \times \frac{4}{5} = \frac{52}{5} = 10 \frac{2}{5} [/tex]
[tex]c) \: 1 \frac{2}{9} \times 1 \frac{4}{7} = \frac{11}{9} \times \frac{11}{7} = \frac{121}{63} = 1 \frac{58}{63} [/tex]
Mam nadzieję, że pomogłam :)
