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y-zonkile
x+1,2y=320
1,2x+1,5y=390
x=320-1,2y
1,2*(320-1,2y)+1,5y=390
x=320-1,2y
385-1,44y+1,5y=390
x=320-1,2y
0,06y=5
y=83 i 1/3 - tyle zonkili kupila
x=320 -100 =220 tyle tulipanow kupila