Răspuns :
a = 2b
a = 3c
a+b+c=220 => 3a+3b+3c=660 ]
Dar a = 2b => 3a = 6b ] => 6b + 3b + 2b = 660 => 11b = 660 => b=60 => Iar 3c = a = 2b ] => a = 120, c =40
a = 3c
a+b+c=220 => 3a+3b+3c=660 ]
Dar a = 2b => 3a = 6b ] => 6b + 3b + 2b = 660 => 11b = 660 => b=60 => Iar 3c = a = 2b ] => a = 120, c =40
[-----]------]------]-----]------]------] primul nr [-----]------]------] al doilea nr [------]-----] al treilea nr 220:11=20 reprez.un segment 20x2=40 al treilea nr 20x3=60 al doilea nr 20x6=120 primul nr