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0,2x+0,4y-0,6+0,3y=3,5
2x+2y-x+2=2y+2
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0,2x+0,4y+0,3y=4,1
2x+2y-x-2y=0
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0,2x+0,7y=4,1
x=0
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0,2*0+0,7y=4,1
Chyba źle i nie jestem pewien ;D