Răspunsuri

  • Utilizator Brainly
2014-08-25T17:18:03+03:00
A+B+C=1012
A/2=B-40 => B=A/2+40
3A=C
A+A/2+40+3A=1012
4A+A/2=972    |*2
8A+A=1944
9A=1944
A=216

B=216/2+40
B=148

C=3*216
C=648
2014-08-25T17:23:33+03:00
A+b+c=1012

b-40=a/2

b=a/2+40=  (a+80)/2

c=3a

a+(a+80)/2 +3a=1012  aducem la acelasi numitor

2a+a+80 +6a= 2024

9a=2024-80

9a=1944

a=216

b=(216+80)/2= 296/2=148

c=3*216= 648