document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=514987>Question 514987</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How do i solve the system for x and y? I need to solve for 1/x and 1/y first though.\r<BR>\n" );
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document.write( "5/x-4/y=-180<BR>\n" );
document.write( "4/x-5/y=-180 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #343656 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=343656\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 5/x-4/y=-180<BR>\n" );
document.write( "4/x-5/y=-180<BR>\n" );
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document.write( "Let 1/x = a<BR>\n" );
document.write( "Let 1/y = b<BR>\n" );
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document.write( "5a - 4b = -180<BR>\n" );
document.write( "4a - 5b = -180<BR>\n" );
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document.write( "Multiply thru 1st by 4<BR>\n" );
document.write( "Multiply thru 2nd by 5<BR>\n" );
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document.write( "20a - 16b = 4*-180<BR>\n" );
document.write( "20a - 25b = 5*-180<BR>\n" );
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document.write( "Subtrace and solve for \"b\":<BR>\n" );
document.write( "9b = 180<BR>\n" );
document.write( "b = 20 <BR>\n" );
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document.write( "So 1/y = 20 and y = 1/20<BR>\n" );
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document.write( "Solve for \"a\", then \"x\":<BR>\n" );
document.write( "4a - 5b = -180<BR>\n" );
document.write( "4a - 5*20 = -180<BR>\n" );
document.write( "4a -100 = -180<BR>\n" );
document.write( "4a = -80<BR>\n" );
document.write( "a = -20<BR>\n" );
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document.write( "So 1/x = -20<BR>\n" );
document.write( "x = -1/20<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "stan H.<BR>\n" );
document.write( "====================<BR>\n" );
document.write( " </SPAN>\n" );
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