$\"\"$

\

The system of equations are

\

$\"\"$

\

Write the equations into matrix form $\"\"$ , where $\"\"$ is coefficient matrix, $\"\"$ is variable matrix and $\"\"$ is constant matrix.

\

\

$\"\"$

\

Inverse of a $\"\"$ matrix : $\"\"$ .

\

Here $\"\"$ and $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

Multiply $\"\"$ by $\"\"$ to solve the system.

\

$\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

$\"\"$

\

The solutions of system of equation $\"\"$ and $\"\"$ .