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2014-04-24T02:00:32+03:00
A+b+c=130
a,b,c  ip  cu 2,3,4
2a=3b=4c=k
a=k/2
b=k/3
c=k/4

k/2 + k/3+ k/4= 130  aducem la acelasi numitor (12)
6k+4k+3k=1560
13k=1560
k=120
a=120/2=60
b=120/3=40
c=120/4=30
15 4 15