Technical information
Behaviour being used: Adaptive mode
Minimum fraction: 0
Question summary: Solve the system of equations. x + y + z - w = 6 2x - y + 3z + 4w = -4 4x + 2y - z - w = -13 -x - 2y + 4z + 3w = 12: (4, -3, -5, 2); ; No solution; (-4, 3, 5, -2)
Right answer summary: (-4, 3, 5, -2)
Question state: todo