Выполните действия: (56x^3*y^4)/(z^5)*(-z^4/16x^2*y^6).

\[\frac{56x^{3}y^{4}}{z^{5}} \cdot \left( - \frac{z^{4}}{16x^{2}y^{6}} \right) =\]

\[= - \frac{56x^{3}y^{4}z^{4}}{z^{5} \cdot 16x^{2}y^{6}} = - \frac{7x}{2y^{2}z}.\]