You find a common number that they could BOTH be divided by(6 and 16 can divided by 2.The fraction in now 3/8.)But if it still is in simplest form,divide it again by a number.
Because 3 and 9 are both divisible by 3, we can simplify this fraction into 1/3.
1
=7
3 over 4
13 over 36
13 over 16
2x over 11
2 over 5
Anything over itself is 1.
7/90
6/9
12/35