{5(x+1)=2y+6
{3(x-1)=3y-6
{5x+5=2y+6
{3x-3=3y-6
{5x-2y=1|*3
{3x-3y=-3|*2
-{15x-6y=3
-{6x-6y=-6
9x=9|:9
x=1
3*1-3y=-3
-3y=-3-3|:(-3)
y=2
{1-3y=2(x-2)
{1-3x=3y-2
{1-3y=2x-4
-{-3x-3y=-3
-{-3y-2x=-5
-x=2|:(-1)
x=-2
-3*(-2)-3y=-3
-3y=-3-6
-3y=-9|:(-3)
y=3
{4(x-2)-3(y+3)=1
{3(x+2)-2(x-y)=5
{4x-8-3y-9=1
{3x+6-2x+2y=5
{4x-3y=18|*2
{x+2y=-1|*3
+{8x-6y=36
+{3x+6y=-3
11x=33|:11
x=3
3+2y=-1
2y=-1-3
2y=-4|:2
y=-2
{7(2x+y)-5(3x+y)=6
{3(x+2y)-2(x+3y)=-6
{14x+7y-15x-5y=6
{3x+6y-2x-6y=-6
-{-x+2y=6
+{x+0y=-6
2y=0|:2
y=0
x+0*0=-6
x=-6