Posted by Melanie on Monday, February 28, 2011 at 6:34pm.
Rewrite your system:
y+2x=5
3y+x= -5
2x+y=5
x+3y= -5
In google type:
solve system substitution
When you see list of results click on:
SolverSOLVE linear system by SUBSTITUTION
When page be open in first roow type
2x+1y=5
In second roow type:
1x+3y= -5
and clic option Solve
You will see solution.