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6gr=0.06zł
x+0.06zł-cena dużego haczyka
8(x+0.06)+6x=3.50
8x+0.48+6x=3.5
14x=3.5-0.48
14x=3.02/:14
x=0.22zł-cena małego haczyka
0.22+0.06=0.28zł-cena dużego haczyka