Răspuns :
a |--|
b |--|+2
c |--|+2+2
a+a+2+a+2+2=30
3×a+6=30
Scadem 6
3×a=24
Impartim la 3
a=8
b=8+2
b=10
c=10+2
c=12
a+b+c=30
a. |....|
b. |....|+2|
c. |....|+4 | } in total 30
30-2-4=24 ( egalarea părților )
24:3=8 ( a )
8+2=10 ( b )
8+4=12 ( c )
v : 8+10+12=30