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4x-2y=10
2x+2y=6/razy (-2)
4x-2y=10
-4x+4y=12
2y=22/dzielenie 2
y=11
2x+2razy 11=6
y=11
2x+22=6
y=11
2x=6-22
y=11
2x=-16/:2
y=11
x=-8
y=11