First lets start by making the denominators the same. I multiplied the 4 by 5 and 10 by 2. 
-25/20 = x -14/20
Add 14/20 on both sides (do the opposite to cancel out and whatever you do to one side you need to do to the other. 
You should get -11/20 = x
        
             
        
        
        
Answer: 
Step-by-step explanation:
An negative exponent seems hard, but it really isn't!
Let's say you have 
All you do is inverse the expression, or find the reciprocal. When you do this the exponent changes to positive .  

 simplifies into 8. So, the result is
 simplifies into 8. So, the result is 

Hope this helps! Please mark as brainliest, thanks!
 
        
             
        
        
        
Answer:

Step-by-step explanation:
They ask: f(x) - g(x) =


 
        
             
        
        
        
Answer:
 X is 39
Step-by-step explanation:
Explanation in picture above