a=2xb=>b=a/2
c=a/4-2
a+b+c=929=>a+a/2+a/4-2=929=> a+a/2+a/4=931
Aduci la acelasi numitor toate fractiile=> 4a+2a+a=931=>7a=931=> a=931/7=>a=133
Daca a=133=> b=133/2 si
c=133-8/4=125/4
Sper sa fie corect :))
