Answer:2.7=n
Step-by-step explanation:
n+27=11n
Move the variable to one side so subtract n
27=10n 
Divide by 10
2.7=n 
I'm not sure if this what you were asking for 
 
        
             
        
        
        
Sorry don't know the answer
        
             
        
        
        
Answer:
Ruth is  x+4=7/3+4,   esmerelda  is  5x+4=35/3+4
Step-by-step explanation:
if Ruth is x, esmerelda is 5x, 
four years ago, 
Ruth is x+4,  esmerelda is 5x+4,  depend on the sum, we get:
x+4+5x+4=22, x=7/3
so:
Ruth is  x+4=7/3+4,   esmerelda  is  5x+4=35/3+4