document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=105651>Question 105651</A>: <I><SPAN STYLE=\"word-break: break-all;\"> One apt. is directly above second apt. Downstairs resident calls his upstairs neighbor and says;\"If one of you is willing to come downstairs, we'll have the same number of people in both apts.\" His neighbor responded with; \"Why don't one of you come up? Then we,ll have twice as many people up here as you have down there.\" How many people in each apt? I know the answers, but am having trouble setting it up into a system of linear equations. Can somebody please help me? Thank you so much in advance. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #76885 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=76885\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If one of you is willing to come downstairs, we'll have the same number of people in both apts<BR>\n" );
document.write( "... D+1=U-1\r<BR>\n" );
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document.write( "Why don't one of you come up? Then we'll have twice as many people up here as you have down there<BR>\n" );
document.write( "... 2(D-1)=U+1 </SPAN>\n" );
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