deletions | additions       diff --git a/untitled.tex b/untitled.tex  index 54a6494..22244a1 100644  --- a/untitled.tex  +++ b/untitled.tex 
...
A^{-1}=\frac{1}{|A|}  \begin{bmatrix}  \begin{vmatrix} a_{22} & a_{23} \\ a_{32} & a_{33}\end{vmatrix} &  \begin{vmatrix} a_{13} & a_{12} \\ a_{33} & a_{32}\end{vmatrix} &  \begin{vmatrix} a_{12} & a_{13} \\ a_{22} & a_{23}\end{vmatrix} \\  \begin{vmatrix} a_{23} & a_{21} \\ a_{33} & a_{31}\end{vmatrix} &  \begin{vmatrix} a_{11} & a_{13} \\ a_{31} & a_{33}\end{vmatrix} &  \begin{vmatrix} a_{13} & a_{11} \\ a_{23} & a_{21}\end{vmatrix} \\  \begin{vmatrix} a_{21} & a_{22} \\ a_{31} & a_{32}\end{vmatrix} &  \begin{vmatrix} a_{12} & a_{11} \\ a_{32} & a_{31}\end{vmatrix} &  \begin{vmatrix} a_{11} & a_{12} \\ a_{21} & a_{22}\end{vmatrix}  \end{bmatrix}  \end{equation}