10.
{a, b} d.p. {2,9}
a/2=k=>a=2k
a/9=k=>a=9k
2k ori 9k= 72=>18k=72=>k=72 :18=>k=4
a=2k=>a=2 ori 4=>a=8
b=9k=>b=9 ori 4=>b=36
11.
{a, b, c} d.p. {2, 4, 7}
a/2=k=>a=2k
b/4=k=>b=4k
c/7=k=>c=7k
7k-2k=60=>5k=60=>k=60 :5=>k=12
a=2k=>a=2 ori 12=>a=24
b=4k=>b=4 ori 12=>b=48
c=7k=>c=7 ori 12=>c=84
Sper ca te-am ajutat....Coroana?:)
