rozwiaz ukłąd algebraicznie i graficznie {-x+1,2y=3 {x+y=6 nastepne {x-2y=3 {2x+y=6

a) {-x+1,2y=3 {x+y=6 -x+1,2y=3 x=6-y -(6-y)+1,2y=3 x=6-y -6+y+1,2y=3 x=6-y 2,2y=3+6 x=6-y 2,2y=9 x=6-y y=9*10/22 x=6-y y=90/22 x=6-y y=4i1/11 x=6-4i1/11 y=4i1/11 x=1i10/11 b) {x-2y=3 {2x+y=6 x=3+2y 2(3+2y)+y=6 x=3+2y 6+4y+y=6 x=3+2y 5y=6-6 x=3+2y 5y=0 x=3+2y y=0 x=3+2*0 y=0 x=3+0 y=0 x=3 y=0