Odpowiedź :
[tex]1 \frac{5}{7} \times 2 \frac{3}{4} = \frac{12}{7} \times \frac{11}{4} = \frac{132}{28} = 4 \frac{20}{28} = 4 \frac{5}{7} [/tex]
[tex]1 \frac{5}{7} \times 2 \frac{3}{4} = \frac{12}{7} \times \frac{11}{4} = \frac{132}{28} = 4 \frac{20}{28} = 4 \frac{5}{7} [/tex]