4. Solve the following linear system using Gaussian elimination.

Show work.

3x + y – z = -5
-4x + y = 6
6x – 2y + 3z = 2

how about looking at
http://www.mathwords.com/g/gaussian_elimination.htm

2 answers

x1+2x2+3x3=4
2x1-3x2+4x3-21=0
4x1+3x2-2x3+25=0
3 1 -1-5
-4 1 0 6
6 -2 3 2
=R3=r3+(-2r1)
=0 -4 1 12=R3