Solve system of equations.Describe each step if your solution.
W+X+Y+Z=2
2W-X+2y-Z=1
-W+2x-y+2z=-2
3w+x+y-Z=5
Please help I only know how to do this with 3 equations.
same thing with 4. Eliminate z, then work with w,x,y
add 1&2, subtract 3 from 2*1, add 1&4 to get
3w+3y = 3
3w+3y = 6
4w+2x+2y = 7
I can see a big problem already.