a) $$\frac{4a^2b^3}{2ab^2} = \frac{2ab^{3-2}}{1} = 2ab$$
б) $$\frac{3xy^2}{6x^3y^3} = \frac{1}{2x^{3-1}y^{3-2}} = \frac{1}{2x^2y}$$
в) $$\frac{24p^4q^4}{48p^2q^2} = \frac{p^{4-2}q^{4-2}}{2} = \frac{p^2q^2}{2}$$
г) $$\frac{36m^2n}{18mn} = \frac{2m^{2-1}}{1} = 2m$$
д) $$\frac{-32b^5c}{12b^4c^2} = \frac{-8b^{5-4}}{3c^{2-1}} = -\frac{8b}{3c}$$
e) $$\frac{-6ax}{-18ax} = \frac{1}{3}$$