document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=80849>Question 80849</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve:\r<BR>\n" );
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document.write( "(x/(x+1)) - (x/(x-1))=-16/63<BR>\n" );
document.write( "I tried to multiply each side by the LCD 63(x+1)(x-1) but then everything cancels each other out and I end up with 0=-16. What am I doing wrong? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #58008 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=58008\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (x/(x+1)) - (x/(x-1))=-16/63<BR>\n" );
document.write( "Multiply thru -by 63(x+1)(x-1) to get:<BR>\n" );
document.write( "63x(x-1) - 63x(x+1) = -16(x^2-1)<BR>\n" );
document.write( "-126x = -16x^2+16<BR>\n" );
document.write( "16x^2-126x-16=0<BR>\n" );
document.write( "8x^2-63x-8=0<BR>\n" );
document.write( "x=[63+-sqrt(63^2-4*8*-8)]/16<BR>\n" );
document.write( "x=[63+-sqrt4225]/16<BR>\n" );
document.write( "x=8 or x=-1/8<BR>\n" );
document.write( "====================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
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