Answer:
-14
Step-by-step explanation:
let the number= X
from the statement, 
(X+6)×2 = X - 2 
open bracket
2X +12 = X- 2 
2X-X = -2-12
X = -14
 
        
             
        
        
        
Answer:
7.5
Step-by-step explanation:
How long does it take a car to travel 1 mile if its average speed is 40 mph? The answer is 1/40 of an hour or 1.5 minutes. multiply this by 5
 
        
                    
             
        
        
        

The only thing I can think of is using the quadratic formula to solve this one
 
        
                    
             
        
        
        
We are given:

First, let's simplify that fraction. We know that 5 goes into 25 5 times. So we can rewrite the equation as:

Combine like terms.

Divide both sides by -2 to get x all by itself.

Simplify

Hope this helps!