Ответ:
- \[\frac{a}{b^3}=\frac{a\cdot b^2}{b^3\cdot b^2}=\frac{ab^2}{b^5}.\]
- \[\frac{m}{9n}=\frac{m\cdot3n^3}{9n\cdot3n^3}=\frac{3mn^3}{27n^4}.\]
- \[\frac{6}{7x^2y}=\frac{6\cdot5xy}{7x^2y\cdot5xy}=\frac{30xy}{35x^3y^2}.\]
- \[\frac{5k}{6p^5}=\frac{5k\cdot4p^4c}{6p^5\cdot4p^4c}=\frac{20kp^4c}{24p^9c}.\]
Ответ: 1) \(\frac{ab^2}{b^5}\); 2) \(\frac{3mn^3}{27n^4}\); 3) \(\frac{30xy}{35x^3y^2}\); 4) \(\frac{20kp^4c}{24p^9c}\).
