Question

I AM SO LOST:

Solve with matrices. 5x -3y = 18 and 2x + 7y = -1

Indicate each matrix with the vertical bar (|) symbol from the keyboard at the beginning and end of each row.

Answer 1

\[\left[\begin{matrix}5 & -3 \\ 2 & 7\end{matrix}\right]\left(\begin{matrix}x \\ y\end{matrix}\right)=\left(\begin{matrix}18 \\ -1\end{matrix}\right)\]
or AX=B

Answer 2

your my hero got it thanks