Put the matrix in reduced row echelon form:
\[\begin{bmatrix} -4 & 0 & 4 & -36 \\ 2 & -4 & 1 & -5 \\ 4 & 3 & -5 & 47 \end{bmatrix}\]Click for (rounded) answer
Click for Latex code
\[
\begin{bmatrix}
-4 & 0 & 4 & -36 \\
2 & -4 & 1 & -5 \\
4 & 3 & -5 & 47
\end{bmatrix}
\]
Solution:
\begin{solution}
\[
\begin{bmatrix}
1 & 0 & 0 & 4 \\
0 & 1 & 0 & 2 \\
0 & 0 & 1 & -5
\end{bmatrix}
\]
\end{solution}