Răspunsuri

2014-04-16T11:43:39+03:00
A+b+c=120 (Am scris 120 ca o suma de 3 numere)

a=5k
b=7k
c=18k

5k+7k+18k=120
30k=120
k=120:30
k=4

a=5*4=20
b=7*4=28
c=18*4=72

Deci, partile sunt 20, 28 si 72
2 5 2