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więc
1,75kg=9,8
1kg=xzł
1,75x=9,8 /:1,75
x=5,60zł
Cena 1 kg to 5,60zł
1kg to x zł
x * 1,75=1 * 9,80
x=5,6
1,75 x = 9,8 /:1,75
x = 5,6
Kilogram winogron kosztuje 5,60 zł.;)