Q: What is the result of 31 minus 19? A: 
Q: What is the result of 86 minus 42? A: 
Q: What is the result of 39 minus 19? A: 
Q: What is the result of 31 minus 10? A: 
Q: What is the result of 31 minus 19? A: 
Q: What is the result of 31 minus 19? A: 
Q: What is the result of 32 minus 10? A: 
Q: What is the result of 31 minus 19? A: 