Mayaanvazquez2001 Mayaanvazquez2001 15-05-2020 Mathematics contestada Solve the system of equations. 3x + 4y + 4z = 4 5x + 7y + 3z = 5 4x + 5y + 72 = 7 a.(x = 10, y = -7, z = 2) b. (x = 7, y = -4, 2 = 1) c. (x = 8, y = – 5,2 = 0) d (x = 9, y = -6,2=-1)