${\frac{(6x^3y^{-4})^{-2}}{(3x^2y^5)^{-3}}}$
$\frac{7^8 * 12^8}{14^8 * 6^8}$
If $(\frac53)^{-5} * (\frac53)^{11} = (\frac53)^{8x}$, find the value of x