y=3-2x
3x-2(3-2x)=1
3x-6-2x=1
x=7
2*7-y=3
14-y=3
-y=-11
y=11
{3x-2y=1 + {3x-2y=1 {7x=7 {3*1-2y=1
{2x-y=3 /-2 {4x+2y=6 x=1 3-2y=1
-2y=1-3
-2y=-2
y=1
y=3-2x
3x-2(3-2x)=1
3x-6-2x=1
x=7
2*7-y=3
14-y=3
-y=-11
y=11
{3x-2y=1 + {3x-2y=1 {7x=7 {3*1-2y=1
{2x-y=3 /-2 {4x+2y=6 x=1 3-2y=1
-2y=1-3
-2y=-2
y=1