5.
А) $$ \frac{3}{4} = \frac{18}{24} $$
Ответ: 3 * 6 = 18, 4 * 6 = 24
Б) $$ \frac{1}{2} = \frac{12}{24} $$
Ответ: 1 * 12 = 12, 2 * 12 = 24
В) $$ \frac{5}{8} = \frac{15}{24} $$
Ответ: 5 * 3 = 15, 8 * 3 = 24
Г) $$ \frac{2}{3} = \frac{16}{24} $$
Ответ: 2 * 8 = 16, 3 * 8 = 24