Q: What is the result of 86 minus 21? A: 
Q: What is the result of 94 minus 69? A: 
Q: What is the result of 83 minus 21? A: 
Q: What is the result of 86 minus 23? A: 
Q: What is the result of 76 minus 21? A: 
Q: What is the result of 86 minus 51? A: 
Q: What is the result of 90 minus 25? A: 
Q: What is the result of 86 minus 21? A: 