Answer:
Explanation:
The matrix formed is shown below
[tex]\begin{bmatrix}{1} & {2} \\ {1} & {-3}\end{bmatrix}\begin{bmatrix}{x} & {} \\ {y} & {}\end{bmatrix}=\begin{bmatrix}{5} & {} \\ {7} & {}\end{bmatrix}[/tex]
Thus, the second row of entries is
1, - 3
