mara=27 conuri \-----\
8
teodor=cu 8 m. m decit Andrei
\-----\---\
total=87 conuri in total
87:3=29(se imparte la 3 segmente) \ ----\
\------\--\ cu 8 m mult
\---\--\
un segment reprezinta 29
teodor=29+8=37
andrei=29-8=21
proba:
mara=29
+teodor=37 total==87
andrei=21