Solve and thanks

Part B: Short Answer 6. Solve the following system, using matrices. 2x + 3y - z =2 x - y+ 5z = 1 3x - 3y + z=3 7. Determine the equation for a line passing through (2,-3,-7) and parallel to the line of intersection of the planes x + y - z = 0 and 5x - 6y + 6z = 5. Describe the nature of intersection between the planes with equations 3x - 2y + 2z = 4, -3x + 2y - 2z = 9, and 6x - 4y + 4z = 8