If $ A = \begin{bmatrix} 2 & -3 & 5 \\ 3 & 2 & -4 \\ 1 & 1 & -2 \end{bmatrix} $ then find `A^{-1}`. Hence solve the following equations. `2x-3y+5z=11`, `3x+2y-4z=-5`, `x+y-2z=-3`