Consider the following function.

$w=\frac{3xy}{2z-6y}$

Find all the first partial derivatives.

$\frac{\text{d}\text{e}\text{l}\text{w}}{\text{d}\text{e}\text{l}\text{x}}=$

$\frac{\text{d}\text{e}\text{l}\text{w}}{\text{d}\text{e}\text{l}\text{r}}=$

$\frac{\text{d}\text{e}\text{l}\text{w}}{\text{d}\text{e}\text{l}\text{r}}=$

Find the total differential,

$\frac{3}{2z-6y}\frac{2z18x}{(2z-6y{)}^2}-\frac{6x-2y}{(2z-6y{)}^2}$