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Drugie graficznie, dwie proste y=2*x-10 i y=2/3x+6
Pierwsze;
{2*x+y=-1
{-2*x-4*y=-8
dalej
3*y=-9
y=-3
x=1
Drugie:
{-2*x+y=-10
{2*x-3*y=-18
dalej
-2*y=-28
y=14
x=12