Răspunsuri

2014-02-14T17:43:33+02:00
A+b+c=660
c=2a
b=3a
a+3a+2a=660 => 6a=660/6 => a=110, b=220, c=330
20 3 20
2014-02-14T18:15:30+02:00
Folosim metoda figurativa
a /-------/
b /-------/-------/-------/
c /-------/-------/           suma 660
sunt 6 segmente egale
660:6=110 ⇒ a=110
b=3*110=330
c=2*110=220
70 4 70