The difference between 79 and 21 is: 
The difference between 92 and 14 is: 
The difference between 75 and 21 is: 
The difference between 79 and 27 is: 
The difference between 69 and 21 is: 
The difference between 79 and 41 is: 
The difference between 81 and 23 is: 
The difference between 79 and 21 is: 