a) \(\frac{42}{24} = \frac{7}{4}\), \(\frac{35}{77} = \frac{5}{11}\), \(\frac{48}{60} = \frac{4}{5}\), \(\frac{72}{96} = \frac{3}{4}\)
б) \(\frac{30}{42} = \frac{5}{7}\), \(\frac{33}{39} = \frac{11}{13}\), \(\frac{45}{51} = \frac{15}{17}\), \(\frac{36}{60} = \frac{3}{5}\)
в) \(\frac{2.3}{2.5} = \frac{23}{25}\), \(\frac{3.7}{6.5} = \frac{37}{65}\), \(\frac{5.7}{3.5} = \frac{57}{35}\), \(\frac{8.3}{6.24} = \frac{83}{624}\)
Ответ: a) \(\frac{7}{4}\), \(\frac{5}{11}\), \(\frac{4}{5}\), \(\frac{3}{4}\); б) \(\frac{5}{7}\), \(\frac{11}{13}\), \(\frac{15}{17}\), \(\frac{3}{5}\); в) \(\frac{23}{25}\), \(\frac{37}{65}\), \(\frac{57}{35}\), \(\frac{83}{624}\)