document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=903012>Question 903012</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Make d the subject of the formula:<BR>\n" );
document.write( "S = n/2[2a+(n-1)d] </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #547645 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=547645\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> S = n/2[2a+(n-1)d]<BR>\n" );
document.write( "(2/n)S = [2a+(n-1)d]<BR>\n" );
document.write( "2S/n = 2a + (n-1)d<BR>\n" );
document.write( "2S/n - 2a = (n-1)d<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%282S%2Fn+-+2a%29%2F%28n-1%29 ALIGN=MIDDLE  ALT=\"%282S%2Fn+-+2a%29%2F%28n-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >= d<BR>\n" );
document.write( "0r<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%282S+-+2an%29%2Fn%28n-1%29 ALIGN=MIDDLE  ALT=\"%282S+-+2an%29%2Fn%28n-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >= d<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );