а) $\frac{8}{10}, \frac{4}{6}, \frac{6}{9}, \frac{10}{25}, \frac{14}{49}, \frac{15}{20}, \frac{12}{15}, \frac{14}{18}$;
б) $\frac{8}{12}, \frac{12}{16}, \frac{12}{18}, \frac{24}{40}, \frac{18}{27}, \frac{20}{70}, \frac{8}{36}, \frac{30}{75}$.
$\frac{8}{10} = \frac{4 * 2}{5 * 2} = \frac{4}{5}$
$\frac{4}{6} = \frac{2 * 2}{3 * 2} = \frac{2}{3}$
$\frac{6}{9} = \frac{2 * 3}{3 * 3} = \frac{2}{3}$
$\frac{10}{25} = \frac{2 * 5}{5 * 5} = \frac{2}{5}$
$\frac{14}{49} = \frac{2 * 7}{7 * 7} = \frac{2}{7}$
$\frac{15}{20} = \frac{3 * 5}{4 * 5} = \frac{3}{4}$
$\frac{12}{15} = \frac{4 * 3}{5 * 3} = \frac{4}{5}$
$\frac{14}{18} = \frac{7 * 2}{9 * 2} = \frac{7}{9}$
$\frac{8}{12} = \frac{2 * 4}{3 * 4} = \frac{2}{3}$
$\frac{12}{16} = \frac{3 * 4}{4 * 4} = \frac{3}{4}$
$\frac{12}{18} = \frac{2 * 6}{3 * 6} = \frac{2}{3}$
$\frac{24}{40} = \frac{3 * 8}{5 * 8} = \frac{3}{5}$
$\frac{18}{27} = \frac{2 * 9}{3 * 9} = \frac{2}{3}$
$\frac{20}{70} = \frac{2 * 10}{7 * 10} = \frac{2}{7}$
$\frac{8}{36} = \frac{2 * 4}{9 * 4} = \frac{2}{9}$
$\frac{30}{75} = \frac{2 * 15}{5 * 15} = \frac{2}{5}$
Пожауйста, оцените решение
