document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=211010>Question 211010</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how is this rational problem done?\r<BR>\n" );
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document.write( "  x over x+12 = 2 over x+4  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #159426 by </B><A HREF=/tutors/aboutme.mpl?userid=padmameesala><B>padmameesala(42)</B></A><img src=\"/images/stars/stars-07.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=padmameesala><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=159426\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x<BR>\n" );
document.write( "------  =  2/(x+4)<BR>\n" );
document.write( "x+12\r<BR>\n" );
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document.write( "cross multiply\r<BR>\n" );
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document.write( "x(x+4) = 2(x+12)\r<BR>\n" );
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document.write( "x^2+4x=2x+24\r<BR>\n" );
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document.write( "x^2+2x-24=0\r<BR>\n" );
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document.write( "-24 factors into 6 and -4 which add up to give the middle term coefficient 4\r<BR>\n" );
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document.write( "x^2+6x-4x-24=0\r<BR>\n" );
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document.write( "X(x+6)-4(x+6)=0<BR>\n" );
document.write( "(x+6)(x-4)=0<BR>\n" );
document.write( "x=-6,4<BR>\n" );
document.write( "hope you will understand </SPAN>\n" );
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