Say for example you have 6/20
You need to figure out what number can go into them evenly.
Sometimes you'll have the fraction 7/8, in which can't be reduced.
2 goes into 6 and 20 evenly
6 divided by 2=3
20 divided by 2=10
That brings that fraction to 3/10
3/10 can't be reduced and therefore is the answer
2/5
1/2
11/40 is in its lowest terms.
14/45 is already a fraction in its lowest terms.
1/7
The lowest term has already been reduced as far as it will go. It is not possible to reduce it further.
3/5
5/9
2
-2/5
2/5
1/2
if you mean 40/64 then it is 5/8 in its lowest terms
11/40 is in its lowest terms.
14/45 is already a fraction in its lowest terms.
4/9
10/30