If this is not possible, enter DNE in each answer cell.
\[\begin{bmatrix}-1\\4\\5\end{bmatrix}=\answer {-1}\begin{bmatrix}2\\1\\-3\end{bmatrix}+\answer {2}\begin{bmatrix}-1\\1\\4\end{bmatrix}+\answer {3}\begin{bmatrix}1\\1\\-2\end{bmatrix}\]