SOLUTION: (n+1)!=42(n-1)! Find n

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Question 892152: (n+1)!=42(n-1)! Find n
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
%28n%2B1%29%21=42%28n-1%29%21
%28n%2B1%29n%28n-1%29%21=42%28n-1%29%21
%28n%2B1%29n=42
n%5E2%2Bn-42=0
%28n%2B7%29%28n-6%29=0
Two solutions but negative factorials are not defined.
n-6=0
n=6