You can put this solution on YOUR website! The two equations you have given are
x = 3 - 3y ---- (1)
x + 3y = -6 ---- (2)
Moving x and y terms to same side in (1) we get
x + 3y = 3
and from (2) we see x + 3y = -6
Clearly 3 is NOT equal to -6. So there is something wrong with one of the equations and they cannot be solved as such. Please check and resubmit your problem.
These two equations represent two parallel lines.
They have no intersection -- therefore, the given system is inconsistent.
In other words, it has no solutions.
The graphical illustration to the problem is a pair of parallel lines.
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