Answer:
C and D are same options 
(D) 
 
Step-by-step explanation:

 
        
             
        
        
        
First it has a sign second is that you can divide 3 by 18 and lastly 18 is greater than 3n
        
             
        
        
        
Answer:25 
Step-by-step explanation:
it 25 bc if u add them and then subtract then u get 25
 
        
             
        
        
        
Cross and multiply which should get you 4x=45 then divid 4 to each side and the answer should be x=11.25