Quiz (1 point)
Given that:
    
    
a = b
    
    f = b - c
    
    Prove that:
f = a - c
The following properties may be helpful:
    - if a = b, then b - c = a - c 
- if the following are true: - a = b
- b = c
 - then a = c 
Please write your proof in the table below. Each row should contain one claim. The last claim is the statement that you are trying to prove.