document.write( "Question 660039: 12a+3+18-9a \n" ); document.write( "
Algebra.Com's Answer #411019 by Tatiana_Stebko(1539)\"\" \"About 
You can put this solution on YOUR website!
\"12a%2B3%2B18-9a=%2812a-9a%29%2B%283%2B18%29=3a%2B21\" \n" ); document.write( "
\n" );