3x-y=2
x-y=1
x-y=1 /*(-1)
-x+y=-1
2x=1
x=0,5
1,5-y=2
y=-0,5
x-y=1/*(-1)
3x-y-x+y=1
2x=1/:2
3*0,5-y=2
-y=2-1,5
-y=0,5/*(-1)
licze na naj ;d
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3x-y=2
x-y=1 /*(-1)
3x-y=2
-x+y=-1
2x=1
x=0,5
1,5-y=2
y=-0,5
3x-y=2
x-y=1/*(-1)
3x-y=2
-x+y=-1
3x-y-x+y=1
2x=1/:2
x=0,5
3x-y=2
3*0,5-y=2
-y=2-1,5
-y=0,5/*(-1)
y=-0,5
licze na naj ;d