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1/2(2x-y)=2
3/5x + 1/2y=2
x - 1/2y=2 wszystko sumujemy
8/5x=4
1.6x=4 /1.6
x=2,5
3/5x +1/2y=2
1,5 + 1/2y=2
1/2y=0,5/*2
y=1