Solve the division problem $$\left[\begin{array}{ccc} -3 &0 &0\cr -4 &3 &0\cr -4 &4 &-3 \end{array}\right] \left[\begin{aligned} x \\ y \\ z\end{aligned}\right] = \left[\begin{array}{c} -3\cr -1\cr -3 \end{array}\right]$$

$\displaystyle \left[\begin{aligned} x \\ y \\ z\end{aligned}\right] =$$\left[\Rule{0pt}{3.6em}{0pt}\right.$$\left]\Rule{0pt}{3.6em}{0pt}\right.$