б) 4 1/11 : 2 19/22

б) \(4 \frac{1}{11} : 2 \frac{19}{22} = \frac{45}{11} : \frac{63}{22} = \frac{45}{11} \cdot \frac{22}{63} = \frac{45 \cdot 22}{11 \cdot 63} = \frac{990}{693} = \frac{10}{7} = 1 \frac{3}{7}\)