A=B*5 A) |_____|...=>A=(5*12):2
A-12=B+12 B) |__|__|....=>B=((5*12):2):5
---------------- -----------------------------------------
A=?B=? A=60:2..=>A=30
B=A:5...=>B=30:5...=>B=6
B=((5*12):2):5
B=(60:2):5
B=30:5
B=6
A=B*5
A=6*5
A=30
A-12=B+12
30-12=6+12
18=18
R=> Alex are 30 de masinute si daca-i da lui Bogdan 12 ramane cu 18
Bogdan are 6 masinute si daca primeste 12 de la Alex are 18