x - cena jabłek
2x+4(x+7,50)=51
2x+4x+30=51
6x=21
x=3,50
cena malin
3,50+7,50=11
Odp. Cena jabłek za kilogram wynosi 3,50 zł, a za kilogram malin 11 zł.
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x - cena jabłek
2x+4(x+7,50)=51
2x+4x+30=51
6x=21
x=3,50
cena malin
3,50+7,50=11
Odp. Cena jabłek za kilogram wynosi 3,50 zł, a za kilogram malin 11 zł.