\[\boxed{\text{Проверьте\ себя}\text{.\ Страница\ 65}}\]
\[\boxed{\text{Проверочная\ работа}\text{.\ Приведение\ дробей\ к\ общему\ знаменателю}}\]
\[\boxed{\text{1.}}\]
\[\frac{1}{7} = \frac{6}{42}\text{.\ \ \ }\]
\[\boxed{\text{2.}}\]
\[\frac{3}{4} = \frac{27}{36}\text{.\ \ \ }\]
\[\boxed{\text{3.}}\]
\[\frac{8}{60} = \frac{4}{30}\text{.\ \ \ }\]
\[\boxed{\text{4.}}\]
\[\frac{1}{3}\ и\ \frac{1}{5}\]
\[\frac{1}{3} = \frac{5}{15};\ \ \ \ \ \frac{1}{5} = \frac{3}{15}\text{.\ \ \ }\]
\[\boxed{\text{5.}}\]
\[\frac{1}{6}\ и\ \frac{1}{9}\ \]
\[\frac{1}{6} = \frac{3}{18};\ \ \ \ \ \frac{1}{9} = \frac{2}{18}\text{.\ \ \ }\]
\[\boxed{\text{6.}}\]
\[\frac{1}{7}\ и\ \frac{5}{14}\]
\[\frac{1}{7} = \frac{2}{14};\ \ \ \ \ \frac{5}{14}\text{.\ \ \ }\]
\[\boxed{\text{7.}}\]
\[Да.\]
\[\boxed{\text{8.}}\]
\[Да.\ \ \ \]
\[Например:\ \]
\[\frac{3}{1};\ \frac{15}{1};\ \ \frac{121}{1}.\]