document.write( "Question 746737: sum of a number and its double is 9.Find the number \n" ); document.write( "
Algebra.Com's Answer #454436 by Cromlix(4381)\"\" \"About 
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x + 2x = 9
\n" ); document.write( "3x = 9
\n" ); document.write( "x = 3\r
\n" ); document.write( "\n" ); document.write( "Your answer is 3
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