в) \(5.1 : \frac{13}{5} = 5.1 \cdot \frac{5}{13} = \frac{5.1 \cdot 5}{13} = \frac{25.5}{13} \approx 1.96\)
\(2.85 : \frac{13}{5} = 2.85 \cdot \frac{5}{13} = \frac{2.85 \cdot 5}{13} = \frac{14.25}{13} \approx 1.1\)
\(0.8 : \frac{13}{5} = 0.8 \cdot \frac{5}{13} = \frac{0.8 \cdot 5}{13} = \frac{4}{13} \approx 0.31\)