Răspuns :
a=0,5k b=0,2k c=o,(3)k a=1|2k b=1|5k c=1|3k 1\2k+1|5k+1|3k=930 k=90 a=90|2 b=90|5 c=90|3=30
A=0.5 k=5/10=1/2 b=0,2k=2/10=1/5 c=0,(3)=3/9=1/3 1/2k+1/5k+1/3k=390