I'm not sure how to go about this one. I see that they may have common multiples but I'm unsure of what that means as far as solving the problem

Review Later Question 6 Use Gauss-Jordan elimination process to solve the following system of linear equations. 7x - 7y- 32=-31 21 x - 21y - 9z=-93 -7 x +7y+3z=31 a) Ox = -2, y=6, 2=0 b) OInfinitely many solutions. c) Ox= -1, y= 3, 2= 1 d) ONo solution. e) Ox =0, y=3, z- -1 () ONone of the above