Gave away 7 ⇒ -7
Bought 6 ⇒ + 6
Left with 13
If he did not buy the 6 cars ...  
13 - 6 = 7
If he did not give the 7 cars away ...
7 + 7 = 14
He has 14 cars at first.
13 - 6
        
             
        
        
        
Answer: a = -3
Explanations:
The given equation is:

This can be re-written as:

Collect like terms:

Cross multiply:

To verify if the solution is correct, substitute a = -3 into the question given. If the Right Hand Side equals the Left Hand Side, then the solution is correct.

Since the Left Hand Side = Right Hand Side = 7, the solution a = -3 is correct
 
        
        
        
Does it give you any more details?? if not it would be undefined for parallel and zero for perpendicular.<span />
        
                    
             
        
        
        
Answer:
37923004188
Step-by-step explanation:
 
        
             
        
        
        
1. Ryan had 4 people coming over but each second person brought 5 different people, let X represent the number of people brought along, what is X?
2. Lexy has 456$ she gave it to four friends. Let M represent how much she gave each friend if she was left with 50$ What does X equal?