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\INVERSEMATRIX(1,-1;3,5)(%
            \sola,\solb;\solc,\sold)
$\begin{bmatrix}
       1 & -1 \\ 3 & 5
 \end{bmatrix}^{-1}=
 \begin{bmatrix}
       \sola & \solb \\ \solc & \sold
 \end{bmatrix}$