Solve simultaneous equations using the inverse matrix
Use the inverse-matrix method for this simultaneous system
The unknown column is ordered as \(w\) then \(z\)
\[\begin{bmatrix} 1 & 1 \\ 6 & 5 \end{bmatrix}\begin{bmatrix} w \\ z \end{bmatrix} = \begin{bmatrix} 12 \\ 64 \end{bmatrix}\]