Ответ:\(\frac{2}{8}=\frac{1}{4}\);\(\frac{15}{20}=\frac{3}{4}\);\(\frac{18}{30}=\frac{3}{5}\);\(\frac{24}{36}=\frac{2}{3}\);\(\frac{9}{45}=\frac{1}{5}\);\(\frac{64}{48}=\frac{4}{3}\).