Question

in trei butoaie sunt 210l de vin . In primele doua sunt 130l, iar in ultimele doua 150l. Cati l de vin sunt in fiecare butoi?
VA ROGG DAU COROANA!!!!!

Answer 1

a+b+c=210
a+b=130
b+c=150

130+c=210
c=210-130
c=80

b+80=150
b=150-80
b=70

a+70=130
a=130-70
a=60

Answer 2

a+b=130
b+c=150
a+b+c=210
130+150=280
210-130=80
c=80
b+c=150; b+80=150; b=150-80=70
b=70
a+b=130; a+70=130; a=130-70; a=60
proba: 60+70+80=210. (a+b+c)=210
succes!