document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1090966>Question 1090966</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The sum of the ages of Armando and Shantel is 72 years. 9 years ago, Armando's age was 2 times Shantel's age. How old is Armando now? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #705444 by </B><A HREF=/tutors/aboutme.mpl?userid=addingup><B>addingup(3677)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=addingup><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=addingup><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=705444\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Armando 9 years ago was 2 x (Shantel - 9)<BR>\n" );
document.write( "A + S = 72 <BR>\n" );
document.write( "subtract S from both sides:<BR>\n" );
document.write( "A = 72 - S<BR>\n" );
document.write( "-------------------------------<BR>\n" );
document.write( "A - 9 = 2(S-9)<BR>\n" );
document.write( "A - 9 = 2S - 18 substitute for A:<BR>\n" );
document.write( "72 - S - 9 = 2S - 18<BR>\n" );
document.write( "63 - S = 2S - 18<BR>\n" );
document.write( "81 = 3S flip it so we can get the unknown on the left:<BR>\n" );
document.write( "3S = 81<BR>\n" );
document.write( "S = 81/3<BR>\n" );
document.write( "S = 27<BR>\n" );
document.write( "A = 72-27 = 45\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );