document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=913253>Question 913253</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the sum of the first n terms of two A.Ps are as 13-7n:3n+1.find the ratio of their first terms and also of their second terms. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #554397 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=554397\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=S%5Ban%5D=+%28n%28a%5B1%5D%2Ba%5Bn%5D%29%29%2F2+ ALIGN=MIDDLE  ALT=\"S%5Ban%5D=+%28n%28a%5B1%5D%2Ba%5Bn%5D%29%29%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=S%5Bbn%5D=+%28n%28b%5B1%5D%2Bb%5Bn%5D%29%29%2F2+ ALIGN=MIDDLE  ALT=\"S%5Bbn%5D=+%28n%28b%5B1%5D%2Bb%5Bn%5D%29%29%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%28n%28a%5B1%5D%2Ba%5Bn%5D%29%29%2F2%29%2F%28%28n%28b%5B1%5D%2Bb%5Bn%5D%29%29%2F2%29++=%28a%5B1%5D%2Ba%5Bn%5D%29%2F+%28b%5B1%5D%2Bb%5Bn%5D%29+=+%2813-7n%29%2F%283n%2B1%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28a%5B1%5D%2Ba%5Bn%5D%29%2F+%28b%5B1%5D%2Bb%5Bn%5D%29+=+%2813-7n%29%2F%283n%2B1%29 ALIGN=MIDDLE  ALT=\"%28a%5B1%5D%2Ba%5Bn%5D%29%2F+%28b%5B1%5D%2Bb%5Bn%5D%29+=+%2813-7n%29%2F%283n%2B1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "n = 1<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2a%5B1%5D%2F2b%5B1%5D+=+6%2F4 ALIGN=MIDDLE  ALT=\"2a%5B1%5D%2F2b%5B1%5D+=+6%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" > , <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%5B1%5D%2Fb%5B1%5D+=+3%2F2 ALIGN=MIDDLE  ALT=\"a%5B1%5D%2Fb%5B1%5D+=+3%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "n = 2<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28a%5B1%5D%2Ba%5B2%5D%29+%2F+%28b%5B1%5D%2Bb%5B2%5D%29+=+%283%2F2+%2B+%28a%5B2%5D%2Fb%5B1%5D+%29%29%2F%281+%2B+%28b%5B2%5D%2Fb%5B1%5D+%29%29+=+%28-1%29%2F7 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >     <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%5B2%5D%2Fb%5B2%5D+=+%28-5%2F2%29%2F6+ ALIGN=MIDDLE  ALT=\"a%5B2%5D%2Fb%5B2%5D+=+%28-5%2F2%29%2F6+\"   DISABLED_style= \"max-width:90%; height:auto;\" >      </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );