Answer :
4/15
show work:
5/12 common denominater is 25/60 then 3/20 common denominater is 9/60 then you subtract them and get 16/60 then simplfiy to 4/15
show work:
5/12 common denominater is 25/60 then 3/20 common denominater is 9/60 then you subtract them and get 16/60 then simplfiy to 4/15