I think the answer Is D fame
        
             
        
        
        
Answer:
7x-1
Step-by-step explanation:
Use commutative property:
(11x-4x) + (-8+7) = 7x-1
 
        
             
        
        
        
2(b-5)+7b-4 
Solve 2(b-5) to get 2b-10
Combine your like terms 2b-10+7b-4
Solve 2b+7b to get 9b
Solve -10+(-4) to get -14 
So your answer is 
9b-14
 
        
        
        
Answer:
A is correct
Step-by-step explanation:
 
        
             
        
        
        
LCM = 1260
The lowest common factor is 1260
Hope this helps! :)