(4ab - 9a - 8) - (7ab - 1) 
distribute (multiply) the negative through the parenthesis 
<span>(4ab - 9a - 8) - 7ab + 1 
No need for other parenthesis because nothing in front or to combine inside. </span>
<span>4ab - 9a - 8 - 7ab + 1
</span>
Combine like terms
- 3ab - 9a - 7 
        
             
        
        
        
Answer:
45tf+47tf=92tf
Step-by-step explanation:
I hope this help you out♊♊ tell me is this correct♊♊♊
 
        
             
        
        
        
Answer:
5.3624785e+55
Step-by-step explanation:
 
        
                    
             
        
        
        
45-9=36/18=2 I hope this helps