Răspuns :
a/b=2/3
3a=2b
a=2b/3
(a+5b)/(2a-b)=(2b/3+5b)/(2·2b/3-b)=
(2b/3+15b/3)/(4b/3-3b/3)=(17b/3)/(b/3)=17b/b=17
3a=2b
a=2b/3
(a+5b)/(2a-b)=(2b/3+5b)/(2·2b/3-b)=
(2b/3+15b/3)/(4b/3-3b/3)=(17b/3)/(b/3)=17b/b=17