Answer:
0.6
Step-by-step explanation:
 
        
                    
             
        
        
        
e=3.
So this is how I approached this. Since 7 is being multiplied, I divided both sides by 7 so 105/7 = 15. Then it becomes simple as 5e=15. We divide both sides by 5 and get e=3. Tip: just try isolating the variable and then life is much easier. 
 
        
                    
             
        
        
        
Answer: Choice A.   
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Work Shown:

 
        
             
        
        
        
Answer:
18\cdot36
Step-by-step explanation: