Proof: Divide by 1
Let's prove the following theorem:
if a = 1, then b / a = b
    
    
    
    Proof:
  
      
      Given
      
    
    
      
  
  
| 1 | a = 1 | 
|---|
| # | Claim | Reason | 
|---|---|---|
| 1 | b / a = b / 1 | if a = 1, then b / a = b / 1 | 
| 2 | b / 1 = b | b / 1 = b | 
| 3 | b / a = b | if b / a = b / 1 and b / 1 = b, then b / a = b | 
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