document.write( "Question 844458: What is the value of x in the expression log (20-x) base 10=3 ? \n" ); document.write( "
Algebra.Com's Answer #508779 by fcabanski(1391)\"\" \"About 
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definition of logarithm: log(baseb) a = x --> \"b%5Ex+=+a\"


\n" ); document.write( "\"10%5E3+=+1000+=+20-x\"


\n" ); document.write( "x = -980 \n" ); document.write( "

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