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The system of equations are .

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Write the system of equations into the matrix form : , where A is coefficient matrix and X is variable matrix and B is constant matrix.

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Place the coefficients of the equations and the constant terms and these are separated by dashed line into a matrix that is augmented matrix.

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The augmented matrix is .

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To make the first element in the first () row a 1, multiply the first row () by .

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To make the first element in the second () row a 0, multiply the first row () by negative 2 and add the result to row 2 ().

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   (The result is placed in row 2).

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The second row contain zero elements that means there is no variables.

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The statement 0 = 7 is false, so the system equation has no solutions.

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