document.write( "Question 683558: twice a certain number is subtracted from 9 times the number, the result is 21. find the number \n" ); document.write( "
Algebra.Com's Answer #423615 by amc4452(2)\"\" \"About 
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9x-2x=21 on left subtract the like terms
\n" ); document.write( "7x=21 divide both sides by 7
\n" ); document.write( "7x/7=21/7 simply
\n" ); document.write( "x=3\r
\n" ); document.write( "\n" ); document.write( "check
\n" ); document.write( "9(3)-2(3)=21
\n" ); document.write( "27 - 6 =21\r
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