$\"\"$

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The system of equations are $\"\"$

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Apply the Cramer $\"\"$ s Rule by comparing the equations with $\"\"$

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$\"\"$ and $\"\"$

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$\"\"$

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The solutions of the system are $\"\"$

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Find the determinant :

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$\"\"$

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$\"\"$ .

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$\"\"$

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Find the value of $\"\"$

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$\"\"$ .

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$\"\"$

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$\"\"$

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Find the value of $\"\"$

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$\"\"$ .

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$\"\"$

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$\"\"$

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The solution is $\"\"$ and $\"\"$ .