document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=328920>Question 328920</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the sum of the first twenty-one terms of an arithmetic series is 273. The fifth term is 7. What is the 49th term? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #235672 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=235672\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> {[a + (a + 20d)] / 2} * 21 = 273 ___ 21a + 210d = 273 ___ a + 10d = 13\r<BR>\n" );
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document.write( "a + 4d = 7\r<BR>\n" );
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document.write( "subtracting equations ___ 6d = 6 ___ d = 1\r<BR>\n" );
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document.write( "substituting ___ a + 4(1) = 7 ___ a = 3\r<BR>\n" );
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document.write( "49th term ___ a + 48d = 51 </SPAN>\n" );
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