document.write( "Question 1113542: hi i think im close but still cant get this one. \r
\n" ); document.write( "\n" ); document.write( "sum of three numbers =129
\n" ); document.write( "second number is 9 less the first
\n" ); document.write( "third number is 3 times the second\r
\n" ); document.write( "\n" ); document.write( "1st #=
\n" ); document.write( "2nd #=
\n" ); document.write( "3rd #=
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Algebra.Com's Answer #728600 by Boreal(15235)\"\" \"About 
You can put this solution on YOUR website!
x, y, and z are the numbers
\n" ); document.write( "x+y+z=129
\n" ); document.write( "y=x-9
\n" ); document.write( "z=3(x-9)
\n" ); document.write( "substitute
\n" ); document.write( "x+x-9+3x-27=129
\n" ); document.write( "5x-36=129
\n" ); document.write( "5x=165
\n" ); document.write( "x=33
\n" ); document.write( "the numbers are 33, 24, and 72, and they add to 129.
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