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

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Definition of augment matrix:

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If $\"\"$ are the system of equations then the augmented matrix is $\"\"$ .

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Augment matrix of the system of equations is $\"\"$ .

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Apply $\"\"$ .

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$\"\"$

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Apply $\"\"$ and $\"\"$ .

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$\"\"$

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Apply $\"\"$ and $\"\"$ .

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$\"\"$

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Apply $\"\"$ .

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$\"\"$ .

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The matrix in the last step can be written in the equation form

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$\"\"$ .

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$\"\"$ .

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$\"\"$ .

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The solution is $\"\"$ , $\"\"$ and $\"\"$ is any real number.

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Solutions of system of equations is $\"\"$ where $\"\"$ is any real number.

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Solutions of system of equations is $\"\"$ where $\"\"$ is any real number.