Реши

б) \(\frac{5}{11} = \frac{5 \cdot 4}{11 \cdot 4} = \frac{20}{44}\)

в) \(\frac{6}{13} = \frac{6 \cdot 3}{13 \cdot 3} = \frac{18}{39}\)

г) \(\frac{1}{12} = \frac{1 \cdot 6}{12 \cdot 6} = \frac{6}{72}\)