document.write( "Question 423957: add:\r
\n" ); document.write( "\n" ); document.write( "(r-8s+7)+(3r+7s)+(s+9)\r
\n" ); document.write( "\n" ); document.write( "the answer is
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Algebra.Com's Answer #295671 by sudhanshu_kmr(1152)\"\" \"About 
You can put this solution on YOUR website!

\n" ); document.write( "after adding: 4r + 16\r
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