The equations can be written as matrices form we

\

Let $\"\"$ , $\"\"$ and $\"\"$

\

Use Gauss Jordan method

\

$\"\"$

\

A :B

\

$\"\"$

\

Apply elementary row operation

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

The values of x = -14 and y = 15.

\

\

\