$\"\"$

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The system of equations are

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$\"\"$

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Write the equations into matrix form $\"\"$ ,

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where $\"\"$ is coefficient matrix, $\"\"$ is variable matrix and $\"\"$ is constant matrix.

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$\"\"$

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

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

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$

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$\"\"$ .

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Rewrite the equation.

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$\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$

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The solutions of the system of equations are $\"\"$ and $\"\"$ .