document.write( "Question 545701: The sum of two times a number and negative thirteen is equal to the difference of the number and nine. Find the number. (the answer is 4 according to the answer key) I do not know how it got there..how is this problem written out? \n" ); document.write( "
Algebra.Com's Answer #355684 by rfer(16322)\"\" \"About 
You can put this solution on YOUR website!
2x-13=x-9
\n" ); document.write( "2x-x=-9+13
\n" ); document.write( "x=4
\n" ); document.write( "
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