Question

Compare 3/5 and 6/9.

Answer 1

3/5 and 6/9 simplified is 2/3.
so 3/5 and 2/3
make them equal so you get : 9/15 and 10/15
6/9 is greater that 3/5 :)

Answer 2

to compare you should make the down part equal first
27/45 < 30/45