Hello, I was in need of assistance with this problem. Use Gauss-Jordan row reduction to solve the given system of equations. (If there is no solution, enter NO SOLUTION. If the system is dependent, express your answer using the parameters x, y, and/or z.)

x - 1/2y = 0

1/3x + 1/3 y + 1/3z = 4

1/2x -1/2z= -4