\[\boxed{\text{Проверьте\ себя}\text{.\ Страница\ 65}}\]
\[\boxed{\text{Проверочная\ работа}\text{.\ Приведение\ дробей\ к\ общему\ знаменателю}}\]
\[\boxed{\text{1.}}\]
\[\frac{1}{2} = \frac{12}{24};\]
\[\frac{1}{3} = \frac{8}{24};\]
\[\frac{3}{4} = \frac{18}{24};\]
\[\frac{5}{6} = \frac{20}{24};\]
\[\frac{10}{12} = \frac{20}{24}.\]
\[\boxed{\text{2.}}\]
\[\frac{3}{4} = \frac{30}{40} = \frac{12}{16} = \frac{72}{96}\text{.\ }\]
\[\boxed{\text{3.}}\]
\[\textbf{а)}\ \frac{1}{2} = \frac{2}{4};\]
\[\textbf{б)}\ \frac{1}{5} = \frac{10}{50}.\]
\[\boxed{\text{4.}}\]
\[\textbf{а)}\ \frac{1}{2}\ и\ \frac{3}{4}\]
\[\frac{1}{2} = \frac{2}{4};\ \frac{3}{4}.\]
\[\textbf{б)}\ \frac{3}{4}\ и\ \frac{7}{8}\]
\[\frac{3}{4} = \frac{6}{8};\ \frac{7}{8}.\]
\[\textbf{в)}\ \frac{7}{10}\ \ и\ \ \frac{8}{15}\]
\[\frac{7}{10} = \frac{21}{30};\ \ \ \frac{8}{15} = \frac{16}{30}.\]
\[\textbf{г)}\ \frac{4}{20}\ \ и\ \ \frac{8}{40}\]
\[\frac{4}{20} = \frac{8}{40}.\]
\[\boxed{\text{5.}}\]
\[\textbf{а)}\ \frac{2}{10} = \frac{1}{5};\ \frac{11}{20};\ \frac{12}{30} = \frac{2}{5}:\]
\[\frac{1}{5} = \frac{4}{20};\ \frac{11}{20};\ \frac{2}{5} = \frac{8}{20}.\]
\[\textbf{б)}\ \frac{4}{12} = \frac{1}{3};\ \ \frac{20}{24} = \frac{5}{6};\ \ \frac{21}{36} = \frac{7}{12}:\]
\[\frac{1}{3} = \frac{4}{12};\ \ \ \frac{5}{6} = \frac{10}{12};\ \ \ \frac{7}{12}.\]
Глава 36. Сравнение, сложение и вычитание дробей с разными знаменателями