The difference between 87 and 45 is: 
The difference between 51 and 46 is: 
The difference between 87 and 45 is: 
The difference between 87 and 46 is: 
The difference between 87 and 45 is: 
The difference between 87 and 75 is: 
The difference between 91 and 49 is: 
The difference between 87 and 45 is: 