josephsalfaro23 josephsalfaro23 04-06-2020 Mathematics contestada Solve the system of equations by finding the reduced row-echelon form of the augmented matrix for the system of equations. 2x + y + 4z = 16 5x - 2y + 2z = -1 X + 2y - 32 = -9 a. (-1, 2, 22) c. (-1, 2, 4) b. (-10, 22, 42) d. (-10, 2, 22)