The difference between 77 and 51 is: 
The difference between 89 and 76 is: 
The difference between 72 and 51 is: 
The difference between 77 and 52 is: 
The difference between 97 and 51 is: 
The difference between 77 and 51 is: 
The difference between 83 and 57 is: 
The difference between 77 and 51 is: 