Math
posted by Geno .
Could you please show me how to do this?
It says to use the elimination method.
2xy+2z=7
x+2y4z=5
x+4y6z=1

http://library.thinkquest.org/C0110248/algebra/simelimination.htm

I know how to use the elimination method, I just get really confused when there's three lines and three variables.