document.write( "Question 466437: how do you do this problem
\n" ); document.write( "x+y=13
\n" ); document.write( "x-y=-5
\n" ); document.write( "

Algebra.Com's Answer #319768 by jorel1380(3719)\"\" \"About 
You can put this solution on YOUR website!
You add the equations together:
\n" ); document.write( "x+y=13
\n" ); document.write( "x-y=-5
\n" ); document.write( "2x=8
\n" ); document.write( "x=4
\n" ); document.write( "y=9..
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