Question

X/Y = 9 mas 3/ Z
tengo que despejar X,Y y Z

Answer 1

$\frac{x}{y} =  \frac{9z}{z} + \frac{3}{z} \\\\ x=y(9z+3)\\\\y=\frac{x}{(9z+3)} \\\\zx=y(9+3) ;   zx=9y+3y;   z=\frac{9y+3y}{x}$