document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=100765>Question 100765</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Serina is 9 years old.  Her mom is 39 years old.  In how many years will her mother be 3 times as old as Serena?\r<BR>\n" );
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document.write( "9 + 39 = 3x (9+39)<BR>\n" );
document.write( "48 = 27x + 117x<BR>\n" );
document.write( "48 = 144x<BR>\n" );
document.write( "x = 3 but it should be 6  what did I do wrong? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #73378 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=73378\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let x be the numer of years.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%2839%2Bx%29%2F%289%2Bx%29=3 ALIGN=MIDDLE  ALT=\"%2839%2Bx%29%2F%289%2Bx%29=3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "39+x=3(9+x) multiply both sides times the denominator.<BR>\n" );
document.write( "39+x=27+3x <BR>\n" );
document.write( "2x=12 subtract x and 27 from each side.<BR>\n" );
document.write( "x=6 divide 2 into each side.<BR>\n" );
document.write( "Check:<BR>\n" );
document.write( "39+6=45<BR>\n" );
document.write( "9+6=15<BR>\n" );
document.write( "45/15=3<BR>\n" );
document.write( "Ed </SPAN>\n" );
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