16. Сократите дробь: з) c12d3 c3d12;

з) $$ \frac{c^{12}d^3}{c^3d^{12}} = \frac{c^{12}}{c^3} \cdot \frac{d^3}{d^{12}} = c^{12-3} \cdot d^{3-12} = c^9 \cdot d^{-9} = \frac{c^9}{d^9} $$

Ответ: $$ \frac{c^9}{d^9} $$