metoda przeciwnych współczynników:
3m+2n=2
5m+4n=6
3m+2n=2/*(-2)
-6m-4n=-4
5m+4=6
-m=2
m=-2
3*(-2)+2n=2
-6+2n=2
2n=2+6
2n=8/:2
n=4
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3m+2n=2/*(-2)
5m+4n=6
-6m-4n=-4
5m+4=6
-m=2
m=-2
3*(-2)+2n=2
-6+2n=2
2n=2+6
2n=8/:2
n=4
m=-2
n=4