{-x-y=-6 {-x+y=2

-2x=8 x=-4 -4-y=6 y=10 prosze o naj:)

-x=-6+y/:-1 -x+y=2 x=6-y -(6-y)+y=2 x=6-y -6+y+y=2 x=6-y 2y=2+6 x=6-y 2y=8/:2 x=6-y y=4 x=6-4 y=4 x=2 y=4