§ Задание 313
\[\boxed{\text{5.313.}}\]
\(\ \)
\[\frac{1}{4} = \frac{2}{8} = \frac{3}{12};\ \ \ \ \ \ \ \ \]
\[\frac{3}{4} = \frac{6}{8} = \frac{9}{12}\text{.\ }\]
\[\boxed{\text{5.313.}}\]
\(\ \)
\[\frac{1}{4} = \frac{2}{8} = \frac{3}{12};\ \ \ \ \ \ \ \ \]
\[\frac{3}{4} = \frac{6}{8} = \frac{9}{12}\text{.\ }\]