document.write( "Question 749112: how do I solve ln (5-x) =12 ? \n" ); document.write( "
Algebra.Com's Answer #455775 by timvanswearingen(106)![]() ![]() 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( " \n" ); document.write( "\n" ); document.write( " \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( " \n" ); document.write( "\n" ); document.write( "Now just solve for x:\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Add x to both sides:\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Subtract e^12 from both sides:\r \n" ); document.write( "\n" ); document.write( " \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. \n" ); document.write( " |