Răspunsuri

  • Utilizator Brainly
2014-11-10T22:17:33+02:00
A+b+c=725
b=a+1
5
a=
5+3c
______________
a=?b=?c=?
______________
Daca a=5+3c si b=a+15⇒b=5+3c+15;b=3c+20
Inlocuim:
5+3c+3c+20+c=725
7c+2
5=725|-25
7c=700
c=100
a=
5+3·100
a=30
5
b=3·100+20
b=320