268. Сократите дроби: a) \(\frac{4}{10}\), \(\frac{8}{12}\), \(\frac{6}{9}\), \(\frac{9}{12}\); б) \(\frac{2}{8}\), \(\frac{3}{12}\), \(\frac{10}{2}\), \(\frac{6}{30}\); в) \(\frac{15}{60}\), \(\frac{88}{33}\), \(\frac{2}{100}\), \(\frac{50}{100}\);

Решение:

a) \(\frac{4}{10} = \frac{2}{5}\), \(\frac{8}{12} = \frac{2}{3}\), \(\frac{6}{9} = \frac{2}{3}\), \(\frac{9}{12} = \frac{3}{4}\);

б) \(\frac{2}{8} = \frac{1}{4}\), \(\frac{3}{12} = \frac{1}{4}\), \(\frac{10}{2} = 5\), \(\frac{6}{30} = \frac{1}{5}\);

в) \(\frac{15}{60} = \frac{1}{4}\), \(\frac{88}{33} = \frac{8}{3}\), \(\frac{2}{100} = \frac{1}{50}\), \(\frac{50}{100} = \frac{1}{2}\).