How do you simplify 8[(0.25,0.5),(0.75,1.5)]-2[(0.25,0.5), (0.75,1.5)]?

$8 \left[\begin{matrix}0.25 & 0.5 \\ 0.75 & 1.5\end{matrix}\right] - 2 \left[\begin{matrix}0.25 & 0.5 \\ 0.75 & 1.5\end{matrix}\right]$ = $6 \left[\begin{matrix}0.25 & 0.5 \\ 0.75 & 1.5\end{matrix}\right]$