document.write( "Question 749112: how do I solve ln (5-x) =12 ? \n" ); document.write( "
Algebra.Com's Answer #455775 by timvanswearingen(106)\"\" \"About 
You can put this solution on YOUR website!
Natural Log has base e, so you'll raise e to both sides of the equation:\r
\n" ); document.write( "\n" ); document.write( "\"ln+%285-x%29+=12\"\r
\n" ); document.write( "\n" ); document.write( "\"e%5E%28ln+%285-x%29%29+=+e%5E12\"\r
\n" ); document.write( "\n" ); document.write( "The e and ln basically cancel each other out, so you've got:\r
\n" ); document.write( "\n" ); document.write( "\"5-x+=+e%5E12\"\r
\n" ); document.write( "\n" ); document.write( "Now just solve for x:\r
\n" ); document.write( "\n" ); document.write( "\"5-x+=+e%5E12\"\r
\n" ); document.write( "\n" ); document.write( "Add x to both sides:\r
\n" ); document.write( "\n" ); document.write( "\"5+=+e%5E12%2Bx\"\r
\n" ); document.write( "\n" ); document.write( "Subtract e^12 from both sides:\r
\n" ); document.write( "\n" ); document.write( "\"5-e%5E12+=+x\"\r
\n" ); document.write( "\n" ); document.write( "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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