document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=270496>Question 270496</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please explain this linear equation:\r<BR>\n" );
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document.write( "If x + y = 15 and x -y = -19 then xy = ?\r<BR>\n" );
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document.write( "Thanks,<BR>\n" );
document.write( "Jesse Evans<BR>\n" );
document.write( "jesseevans@hughes.net </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #198499 by </B><A HREF=/tutors/aboutme.mpl?userid=papugai><B>papugai(18)</B></A><img src=\"/images/stars/stars-06.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=papugai><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=198499\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If x + y = 15 and x -y = -19 then xy = ? <BR>\n" );
document.write( "Add the two equations:<BR>\n" );
document.write( "2x=-4<BR>\n" );
document.write( "x=-2<BR>\n" );
document.write( "sub into first equation:<BR>\n" );
document.write( "-2+y=15<BR>\n" );
document.write( "y=17 <BR>\n" );
document.write( "xy=-2*17=-34<BR>\n" );
document.write( "Hope this was helpful </SPAN>\n" );
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