For this case we have the following expression:
  
 Using the associative property we can rewrite the expression in the following way:
  
 Finally, simplifying we have:
  
  
 Answer:
 Rewriting the expression we have that the result is:
 d. -7
 
        
             
        
        
        
Answer:
its open
Step-by-step explanation:
i just did it
 
        
             
        
        
        
Answer:
-n - 2
Step-by-step explanation:
3n+2(-2n-1) 
= 3n -4n -2
= -n - 2