Vlad+Dan+Iulia=361 cm
V(Vlad)= D-3 cm
Iulia= D-5 cm
Inaltimea lui Dan= D
D-3cm+D+D-5cm=361cm
3D-3cm-5cm=361cm
3D=361cm+ 3 cm +5cm
3D=369cm
D=369cm:3
D=123cm
Iulia =D-5cm =123cm-5cm=118cm
Vlad=D-3cm=123cm-3cm=120cm
Raspuns:Dan-123 cm Iulia=118 cm Vlad=120 cm