Rút gọn các phân số:
\(\frac{3}{6}\); \(\frac{18}{24}\); \(\frac{5}{35}\); \(\frac{40}{90}\); \(\frac{75}{30}\).
\(\frac{3}{6}= \frac{3:3}{6:3}= \frac{1}{2}\); \(\frac{18}{24} = \frac{18:6}{24:6} = \frac{3}{4}\);
\(\frac{5}{35}= \frac{5:5}{35:5} = \frac{1}{7}\); \(\frac{40}{90} = \frac{40:10}{90:10}= \frac{4}{9}\);
\(\frac{75}{30} = \frac{75:15}{30:15} = \frac{5}{2}\).
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