document.write( "Question 1118205: Solve for x: \"log%28x%2C7%29%2Alog%287%2C5%29=2\" \n" ); document.write( "
Algebra.Com's Answer #733460 by greenestamps(13200)\"\" \"About 
You can put this solution on YOUR website!


\n" ); document.write( "Use the change-of-base formula:

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\n" ); document.write( "Then the last equation in that string says

\n" ); document.write( "\"x%5E2+=+5\"
\n" ); document.write( "\"x+=+sqrt%285%29\"

\n" ); document.write( "Note that people who are familiar with logarithms simply look at the original equation

\n" ); document.write( "\"log%28x%2C7%29%2Alog%287%2C5%29=2\"

\n" ); document.write( "and \"cancel\" the 7's to get \"log%28x%2C5%29+=+2\", then proceed from there.
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