SOLUTION: how do I solve ln (5-x) =12 ?

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Question 749112: how do I solve ln (5-x) =12 ?
Answer by timvanswearingen(106) About Me  (Show Source):
You can put this solution on YOUR website!
Natural Log has base e, so you'll raise e to both sides of the equation:
ln+%285-x%29+=12
e%5E%28ln+%285-x%29%29+=+e%5E12
The e and ln basically cancel each other out, so you've got:
5-x+=+e%5E12
Now just solve for x:
5-x+=+e%5E12
Add x to both sides:
5+=+e%5E12%2Bx
Subtract e^12 from both sides:
5-e%5E12+=+x
That is an exact answer. If you want an approximated answer, just evaluate that and round to whichever place you need to.