5.318 Запишите по две дроби, равные дроби: а) $$\frac{1}{2}$$; б) $$\frac{4}{6}$$; в) $$\frac{3}{5}$$; г) $$\frac{12}{14}$$.

a) $$\frac{1}{2}$$

• $$\frac{1}{2} = \frac{1 \cdot 2}{2 \cdot 2} = \frac{2}{4}$$
• $$\frac{1}{2} = \frac{1 \cdot 3}{2 \cdot 3} = \frac{3}{6}$$

б) $$\frac{4}{6}$$

• $$\frac{4}{6} = \frac{4 \div 2}{6 \div 2} = \frac{2}{3}$$
• $$\frac{4}{6} = \frac{4 \cdot 2}{6 \cdot 2} = \frac{8}{12}$$

в) $$\frac{3}{5}$$

• $$\frac{3}{5} = \frac{3 \cdot 2}{5 \cdot 2} = \frac{6}{10}$$
• $$\frac{3}{5} = \frac{3 \cdot 3}{5 \cdot 3} = \frac{9}{15}$$

г) $$\frac{12}{14}$$

• $$\frac{12}{14} = \frac{12 \div 2}{14 \div 2} = \frac{6}{7}$$
• $$\frac{12}{14} = \frac{12 \cdot 2}{14 \cdot 2} = \frac{24}{28}$$

Ответ: a) $$\frac{2}{4}$$, $$\frac{3}{6}$$; б) $$\frac{2}{3}$$, $$\frac{8}{12}$$; в) $$\frac{6}{10}$$, $$\frac{9}{15}$$; г) $$\frac{6}{7}$$, $$\frac{24}{28}$$