Răspuns :
a+b+c=778
a+b=574
574+c=778
c=778-574
c=204
b+c=655
a=778-655
a=123
b=574-123
b=451
a+b=574
574+c=778
c=778-574
c=204
b+c=655
a=778-655
a=123
b=574-123
b=451
∅ Rezolvare :
a + b + c = 778
a + b = 574
b + c = 655
c = 778 — 574
c = 204
a = 778 — 655
a = 123
a + b = 574 =>
→ 123 + b = 574 =>
→ b = 574 — 123 =>
→ b = 451
a + b + c = 778
a + b = 574
b + c = 655
c = 778 — 574
c = 204
a = 778 — 655
a = 123
a + b = 574 =>
→ 123 + b = 574 =>
→ b = 574 — 123 =>
→ b = 451
