Yes.
20/27 is in simplest form because they are relatively prime.
It is already in simplest form as nothing divides in to both 20 and 27 except 120/27 is in its simplest form.
Divide both the numerator and the denominator by 2, you get 20/27.
9 over 20
27/180 = 3/20
4/27
9/20
22/27 is the simplest form for 22 over 27.
235/100 = 47/20 = 27/20
19/27 is the simplest form.
27/64 is the simplest form.
5/27 is in its simplest form.