document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=163768>Question 163768</A>: <I><SPAN STYLE=\"word-break: break-all;\"> l = a + (n + 1) d; for n<BR>\n" );
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document.write( "please help me solve. thank you! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #120634 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=120634\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> l=a+(n+1)d; for n<BR>\n" );
document.write( "1=A+ND+D<BR>\n" );
document.write( "ND=1-A-D<BR>\n" );
document.write( "N=(1-A-D)/D<BR>\n" );
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