Yes it is.
The simplest form of seventy five over two hundred is 3/8
Nine over 21 in its simplest form is 3/7
3/7
5 over 7
Expressed as a proper fraction in its simplest form, by dividing the numerator and denominator by 3, 27/237 is equal to 9/79 or nine seventy-ninths.
It is already in its simplest form.
11/17
It is already in simplest form.
9/50 is in its simplest form.
4/11
9/10
1/2