$\"\"$

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The system of equations are $\"\"$ , $\"\"$ and $\"\"$ .

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Cramer $\"\"$ s rule : Solutions of the system of equations $\"\"$ , $\"\"$ and $\"\"$ for $\"\"$ .

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Caluculate the determinant of matrix $\"\"$ .

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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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Find $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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Find $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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Find $\"\"$ .

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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 solution of the system of equations are $\"\"$ , $\"\"$ and $\"\"$ .

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$\"\"$

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The solution of the system of equations are $\"\"$ .