Answer
$\begin{vmatrix} -4 & -0.5 \\ 3 & 3 \end{vmatrix}$
Work Step by Step
$2C-0.5B=2\begin{vmatrix} -1 & 0 \\ 0 & 1 \end{vmatrix}-0.5\begin{vmatrix} 4 & 1 \\ -6 & -2 \end{vmatrix}=\begin{vmatrix} -2 & 0 \\ 0 & 2 \end{vmatrix}+\begin{vmatrix} -2 & -0.5 \\ 3 & 1 \end{vmatrix}=\begin{vmatrix} -2-2 & 0-0.5 \\ 0+3 & 2+1 \end{vmatrix}=\begin{vmatrix} -4 & -0.5 \\ 3 & 3 \end{vmatrix}$