4/16
3/8
8/4
4Pi/2
16!/10!
Sqrt[9/16]
Sqrt[3/4]
(23/12)^5
2 + 1/(1 + 1/(3 + 1/4))

1/2+1/3+1/5
8/Pi+Pi/8 //Together
13/17 + 7/31
Sum[1/n,{n,1,100}]      (*summation of 1/1 + 1/2 + 1/3 + 1/4+ .........+ 1/99 + 1/100*)

1/2-1/3
a=1/3;a+=1/7

1/4==2/8
1/4>3/8
Pi/E >23/20
1/3!=123/370
Sin[3]/Sin[2]>3/20

Numerator[6/9]
Denominator[6/9]