Use Gauss-Jordan reduction to solve the following linear system: 2x 1
​ +4x 2
​ −2x 3
​ +x 4
​ =0
−2x 1
​ −5x 2
​ +7x 3
​ +3x 4
​ =1
3x 1
​ +7x 2
​ −8x 3
​ −4x 4
​ = 2
1
​ ​