document.write( "Question 299536: what is the answer to, log(x+4)+log5=log10x \n" ); document.write( "
Algebra.Com's Answer #215234 by dabanfield(803)![]() ![]() ![]() You can put this solution on YOUR website! what is the answer to, log(x+4)+log5=log10x\r \n" ); document.write( "\n" ); document.write( "By a law of logs we have log(x+4) + log(5) = log((x+4)*5) so we have:\r \n" ); document.write( "\n" ); document.write( "log((x+4)*5) = log(10x) so\r \n" ); document.write( "\n" ); document.write( "(x+4)*5 = 10x \n" ); document.write( "5x + 20 = 10x \n" ); document.write( "5x = 20 \n" ); document.write( "x = 4 \n" ); document.write( " |