Question text a) Using Gaussian elimination or otherwise, solve the system of equations \[x+2y-z=6\\6x-y+z=7\\2x+3y-2z=6\] \(x=\)Answer 1 Question 5[input], \(y=\)Answer 2 Question 5[input], \(z=\)Answer 3 Question 5[input] b) For which real number \(k\) does the system of equations \[x+2y-z=6\\kx-y+z=7\\2x+3y-2z=6\] have no solution? \(k=\) Answer 4 Question 5[input]多项填空题