Odpowiedź :
x-ilosc jablek
y-ilosc gruszek
x+y = 20
2.4 x = 12+ 4.8y
x+y=20 /*4.8
2.4x-4.8y =12
4.8x +4.8y = 96
2.4x -4.8y =12
7.2x = 108
x= 15, y=20-15=5
odp: kupiono 15kg jablek i 5 kg gruszek
y-ilosc gruszek
x+y = 20
2.4 x = 12+ 4.8y
x+y=20 /*4.8
2.4x-4.8y =12
4.8x +4.8y = 96
2.4x -4.8y =12
7.2x = 108
x= 15, y=20-15=5
odp: kupiono 15kg jablek i 5 kg gruszek
15×2,40zł=36zł-jabłka
5×4,80zł=24zł-gruszki
ODP:Jabłek kupiono 15kg ,a gruszek 5kg.
5×4,80zł=24zł-gruszki
ODP:Jabłek kupiono 15kg ,a gruszek 5kg.