Сокращение дробей

a) $$rac{4}{10} = \frac{2 \times 2}{2 \times 5} = \frac{2}{5}$$ $$rac{8}{12} = \frac{4 \times 2}{4 \times 3} = \frac{2}{3}$$ $$rac{6}{9} = \frac{3 \times 2}{3 \times 3} = \frac{2}{3}$$ $$rac{9}{12} = \frac{3 \times 3}{3 \times 4} = \frac{3}{4}$$

б) $$rac{2}{8} = \frac{2 \times 1}{2 \times 4} = \frac{1}{4}$$ $$rac{3}{12} = \frac{3 \times 1}{3 \times 4} = \frac{1}{4}$$ $$rac{10}{2} = \frac{2 \times 5}{2 \times 1} = \frac{5}{1} = 5$$ $$rac{6}{30} = \frac{6 \times 1}{6 \times 5} = \frac{1}{5}$$

в) $$rac{15}{60} = \frac{15 \times 1}{15 \times 4} = \frac{1}{4}$$ $$rac{88}{33} = \frac{11 \times 8}{11 \times 3} = \frac{8}{3}$$