Răspuns :
{a,b} d.p. {2,3}
a/2=b/3=k
=> a=2k; b=3k
(2a+3b)/(a+b)=(4k+9k)/(2k+3k)=13k/5k=13/5
a/2=b/3=k
=> a=2k; b=3k
(2a+3b)/(a+b)=(4k+9k)/(2k+3k)=13k/5k=13/5