document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=670947>Question 670947</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me solve this problem.\r<BR>\n" );
document.write( "\n" );
document.write( "A(n)=A(1)+nd-d\r<BR>\n" );
document.write( "\n" );
document.write( "Solving for d. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #417247 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=417247\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A(n) = A(1) + nd-d<BR>\n" );
document.write( "Solving for d.<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Factor out d:<BR>\n" );
document.write( "A(n) = A(1) + d(n-1)<BR>\n" );
document.write( ":<BR>\n" );
document.write( "subtract A(1) from both sides<BR>\n" );
document.write( "A(n) - A(1) = d(n-1)<BR>\n" );
document.write( ":<BR>\n" );
document.write( "divide both sides by (n-1)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28A%28n%29-A%281%29%29%2F%28%28n-1%29%29 ALIGN=MIDDLE  ALT=\"%28A%28n%29-A%281%29%29%2F%28%28n-1%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = d<BR>\n" );
document.write( ":<BR>\n" );
document.write( "factor out A<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28A%28n-1%29%29%2F%28%28n-1%29%29 ALIGN=MIDDLE  ALT=\"%28A%28n-1%29%29%2F%28%28n-1%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = d<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Cancel (n-1)<BR>\n" );
document.write( "A = d </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );