Alright so this is what you do. You need to isolate one variable so that it is y = or x = Lets go with y = for the first one
-x +3y = -6 x - 3y = 6
Isolate y = by adding x for the first one and then subtracting x from the second one. 3y = -6 + x -3y = 6 - x
You would then divide the second one by -3 and divide by 3 in the first one.
y = (-6 +x) / 3 y = (6 -x) / -3 Since this is what y = you can put them together.
-6+x) / 3 = 6-x)/-3 (I put one parenthesis for convenience)
This equation is now set and you aren't done yet. You can take out -1 from each side. This makes it no solution since you must always multiply by -1. (6+x) / 3 = -1( (6+x) / 3)
