1laptop+1tabletă=1700
3laptopuri+4tablete=5300
3laptopuri+3tablete=3×1700
3laptopuri+3tablete=5100
5300-5100=200 =prețul tabletei
1laptop+200=1700
1laptop=1700-200
1laptop=1500
1laptop+1tabletă=1500+200
1laptop+1tabletă=1700
3laptopuri+4tablete=5300
3×1500+4×200=4500+800=5300
Sper că am fost de ajutor!!