4. Сократите дроби: a) \(\frac{14}{21}\) = b) \(\frac{55}{77}\) = в) \(\frac{140}{210}\) = г) \(\frac{30}{150}\) = \(\frac{12}{30}\) = \(\frac{81}{270}\) = \(\frac{105}{165}\) = \(\frac{80}{200}\) = \(\frac{24}{60}\) = \(\frac{75}{450}\) = \(\frac{144}{360}\) = \(\frac{21}{36}\) = \(\frac{35}{105}\) = \(\frac{135}{180}\) = \(\frac{240}{560}\) = \(\frac{81}{108}\) =

a) \(\frac{14}{21} = \frac{2}{3}\)

б) \(\frac{55}{77} = \frac{5}{7}\)

в) \(\frac{140}{210} = \frac{2}{3}\)

г) \(\frac{30}{150} = \frac{1}{5}\)

\(\frac{12}{30} = \frac{2}{5}\)

\(\frac{81}{270} = \frac{3}{10}\)

\(\frac{105}{165} = \frac{7}{11}\)

\(\frac{80}{200} = \frac{2}{5}\)

\(\frac{24}{60} = \frac{2}{5}\)

\(\frac{75}{450} = \frac{1}{6}\)

\(\frac{144}{360} = \frac{2}{5}\)

\(\frac{21}{36} = \frac{7}{12}\)

\(\frac{35}{105} = \frac{1}{3}\)

\(\frac{135}{180} = \frac{3}{4}\)

\(\frac{240}{560} = \frac{3}{7}\)

\(\frac{81}{108} = \frac{3}{4}\)

Ответ: смотри решение