Quiz (1 point)
Given that:
    
    
x = a - a
    
    Prove that:
x = 0
The following properties may be helpful:
    - a - a = 0
 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.