Solving Multivariable Linear Systems:

Question

3x-5y+5z = 1
5x-2y+3z = 0
7x-y+z = 5

I am confused on how to solve this. I'm supposed to use the Row-Echelon form.

Thanks.

Answer 1

argghhh! I don't like that method, however this page shows you step by step what to do

http://www.math.odu.edu/~bogacki/cgi-bin/lat.cgi?c=rref

enter: 3 rows, 4 columns, then

3 -5 5 1
5 -2 3 0
7 -1 1 5

Answer 2

Wow, thanks.