## Precalculus (10th Edition)

$\begin{cases} x+2y+5z=-2\\ 5x -3z=8\\ 2x-y =0 \end{cases}$
We are given the augmented matrix: $\begin{bmatrix}1&2&5&|&-2\\5&0&-3&|&8\\2&-1&0&|&0\end{bmatrix}$ Write the corresponding system of equations: $\begin{cases} x+2y+5z=-2\\ 5x -3z=8\\ 2x-y =0 \end{cases}$