aflati nr a, b, c, b=/ 0 puntru care c-a=8 si a/3=8/b=c/5

c-a=8
a/3=8/b=c/5 =>3c=5a
3c-3a=24
3c=5a
5a-3a=24
2a=24 =>a=12
c=8+a=8+12=20
a/3=8/b
b=3*8/a=24/12=2
a=12
c=20
b=2