\[\boxed{\text{5.109.}}\]
\[Совпадающие\ точки:\]
\[\text{A\ }\left( \frac{4}{20} \right) = C\ \left( \frac{1}{5} \right) = E\ \left( \frac{4}{20} \right);\ \]
\[\text{B\ }\left( \frac{2}{7} \right) = K\ \left( \frac{20}{70} \right)\text{.\ \ }\]