Ответ:\(\frac{a^3b}{c}\cdot\frac{c^2}{a^4}=\frac{bc}{a}\).\(\frac{m^2n}{k}\cdot\frac{k^3}{mn^3}=\frac{mk^2}{n^2}\).\(\frac{2a}{3b}\cdot6c=\frac{4ac}{b}\).\(14a^2\cdot\frac{b^2}{7c^3}=\frac{2a^2b^2}{c^3}\).