document.write( "Question 990039: 3 times the difference of a number and 21 \n" ); document.write( "
Algebra.Com's Answer #611345 by EdenWolf(517)\"\" \"About 
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\"3 times the difference of a number and 21\"
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\n" ); document.write( "\n" ); document.write( "Let x = the number.\r
\n" ); document.write( "\n" ); document.write( "\"3%2A%2821-x%29\"\r
\n" ); document.write( "\n" ); document.write( "Simplify the expression -- expand it.\r
\n" ); document.write( "\n" ); document.write( "\"63-3x\"\r
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