41/2= 53/4= 6*2/9
źródło:
\frac{}{}
4*\frac{1}{2}= \frac{4}{2}= 2
5*\frac{3}{4}= \frac{15}{4}= 3 \frac{3}{4}
6*\frac{2}{9}=\frac{12}{9}= 1 \frac{3}{9}= 1 \frac{1}{3}