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

Question 749112: how do I solve ln (5-x) =12 ?
Answer by timvanswearingen(106) (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:

The e and ln basically cancel each other out, so you've got:

Now just solve for x:

Add x to both sides:

Subtract e^12 from both sides:

That is an exact answer. If you want an approximated answer, just evaluate that and round to whichever place you need to.
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