document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=980579>Question 980579</A>: <I><SPAN STYLE=\"word-break: break-all;\">     -Adrian and Betty have been teaching for a total of 36 years.\r<BR>\n" );
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document.write( "            -Charlie and Betty have been teaching for a total of 22 years.\r<BR>\n" );
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document.write( "            -Charlie and Adrian have been teaching for a total of 28 years.\r<BR>\n" );
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document.write( "How long has each been teaching? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #601807 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=601807\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> -Adrian and Betty have been teaching for a total of 36 years.\r<BR>\n" );
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document.write( "            -Charlie and Betty have been teaching for a total of 22 years.\r<BR>\n" );
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document.write( "            -Charlie and Adrian have been teaching for a total of 28 years.\r<BR>\n" );
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document.write( "How long has each been teaching?<BR>\n" );
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document.write( "a + b + 0 = 36<BR>\n" );
document.write( "0 + b + c = 22<BR>\n" );
document.write( "a + 0 + c = 28<BR>\n" );
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document.write( "a + b + 0 = 36<BR>\n" );
document.write( "0 + b + c = 22<BR>\n" );
document.write( "------------------- Subtract<BR>\n" );
document.write( "a - c = 14<BR>\n" );
document.write( "a + c = 28 3rd equation<BR>\n" );
document.write( "---------------------------- Add<BR>\n" );
document.write( "2a = 42<BR>\n" );
document.write( "a = 21<BR>\n" );
document.write( "Can you do the rest? </SPAN>\n" );
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