Răspuns :
a=k.
b=2k
c=3k
k+2k+3k=60
6k=60
k=10
a=k=10
b=2k=20
c=3k=30
b=2k
c=3k
k+2k+3k=60
6k=60
k=10
a=k=10
b=2k=20
c=3k=30
a+b+c = 60
a=k
b = 2k
c = 3k
k+2k +3k = 60
6k = 60
k = 60: 6 = 10
a = 10
b = 20
c = 30
a=k
b = 2k
c = 3k
k+2k +3k = 60
6k = 60
k = 60: 6 = 10
a = 10
b = 20
c = 30