document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=223529>Question 223529</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Oh boy! I just don't get it.\r<BR>\n" );
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document.write( "1/n+ 1/(n+1)= -1/n(n+1) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #167736 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=167736\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1/n+ 1/(n+1)= -1/n(n+1)<BR>\n" );
document.write( "Add the 2 fractions on the left.  To do that, get a common denominator<BR>\n" );
document.write( "DEN = n(n+1), the same on the right side.<BR>\n" );
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document.write( "(n+1)/DEN + n/DEN = -1/DEN<BR>\n" );
document.write( "Multiply thru by DEN<BR>\n" );
document.write( "(n+1) + n = -1<BR>\n" );
document.write( "2n+1 = -1<BR>\n" );
document.write( "2n = -2<BR>\n" );
document.write( "n = -1<BR>\n" );
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