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Use Gauss elimination to solve the following system of equations: x= y = The second row of the row-echelon form of the augmented matrix

Use Gauss elimination to solve the following system of equations: x= y = The second row of the row-echelon form of the augmented matrix is z = x-2y+z3 2x - 2y + 4z = 2 4x + y = 7

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