a+b+c=2 450
a= b+250; c+180;
a=?
b=?
c=?
b l---------l
c l---------l
a l----------l--------l+250l+180 total 2 450
2 450 - (250+180)=2,020
2,020:4=505 un seg egal, b,c
505 ori 2=1,010
1,010+180+250=1,440
verificam: 505+505+1,440=2,450 a=1,440 b=505 c=505 sper ca te-am ajutat.