-8 - 5n = 64 + 3n
     +5n          +5n           add 5n to both sides, 5n's cancel out on the left.
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-8 = 64 + 8n
-64 -64                          subtract 64 on both sides, 64's cancel out on the right.
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-72 = 8n
___  ___                       divide 8 on both sides, 8's cancel out from the right.
  8      8
n= -9, final answer
 
        
                    
             
        
        
        
Answer:
A
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
-5.4c
Step-by-step explanation:
We're combining two "like" terms here.
It may make the problem easier to visualize if we write one of these terms over the other, as follows:
-2.6c 
- 2.8c
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Adding, we get:
-2.6c 
- 2.8c
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- 5.4c (answer)