Answer:
glhIblzikdjbgjdzgbobrgbzoerbgoernbs
Step-by-step explanation:
ur welcome ;)
 
        
                    
             
        
        
        
Answer:
(-b) is the answer.
Step-by-step explanation:
 2(a-b)-(2a-b)
=2a-2b-2a+b (opening the brackets)
= -b
Hope this helps you buddy. Have a nice day^_^. 
If you have doubt then you can ask in comments. I will surely answer.
 
        
                    
             
        
        
        
Answer:2:8 , 3:12, 4:16, 5:20
Step-by-step explanation: