Question

{2(x+3y)+9=x+6
{3(x-2y)=x+30

Answer 1

{ 2x+6y+9=x+6
{3x-6y=x+30
______________
{x+6y=-3
{2x-6y=30
____________
3x=27         9+6y=-3
x=9             6y=-12
                  y=-2