In Problems 27–38, the reduced row echelon form of a system of linear equations is given. Write the system of equations corresponding to the given matrix. Use x, y; or x, y, z; or x₁, x₂, x₃, x₄ as variables. Determine whether the system is consistent or inconsistent. If it is consistent, give the solution.

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1 1 0 2 0 1 -1 0000 100 0 0 -2 2 0 0