Question 641545
If the 6 is only under the 1 (but not the n), then....
 

n - 1/6 = 8


n = 8 + 1/6
 

n = 8*(6/6) + 1/6
 

n = 48/6 + 1/6
 

n = 49/6
 

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OR

 
If the 6 is under the "n-1", then...
 

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(n-1)/6 = 8

 
n-1 = 8*6

 
n - 1 = 48

 
n = 48+1

 
n = 49