x+2y=-2
2x-y=1
x=-2y-2
2x-y=1 podstawiamy
2(-2y-2)-y=1
-4y-4-y=1
-4y-y=1+4
-5y=5/(-5)
y=-1
x=-2y-2 obliczamy x
x=-2razy-1-2
x=2-2
x=0
spr.
0+2razy-1=-2
-2=-2
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x+2y=-2
2x-y=1
x=-2y-2
2x-y=1 podstawiamy
2(-2y-2)-y=1
-4y-4-y=1
-4y-y=1+4
-5y=5/(-5)
y=-1
x=-2y-2 obliczamy x
x=-2razy-1-2
x=2-2
x=0
y=-1
spr.
x+2y=-2
0+2razy-1=-2
-2=-2
licze na naj