Ответ:а) \(\frac{5a^2}{15ab}=\frac{a}{3b}\).б) \(\frac{6m^2n}{18mn^2}=\frac{m}{3n}\).в) \(\frac{6x^2y^2}{18x^3y}=\frac{y}{3x}\).г) \(\frac{30p^5q}{120p^3q^3}=\frac{p^2}{4q^2}\).