Răspunsuri

  • Utilizator Brainly
2014-03-31T22:03:36+03:00
4a=8c ⇒ a=2c;
2b=8c ⇒ b=4c;
8c=x(a+b+c)  ⇒ 8c=x(2c+4c+c)=x·7c ⇒ x=8c/7c=8/7