document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=227977>Question 227977</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am trying to help my daughter with solving rational expressions - and I have forgotten exactly how to do it\r<BR>\n" );
document.write( "\n" );
document.write( "The problem is:\r<BR>\n" );
document.write( "\n" );
document.write( "F = f1f2/f1+f2  --- Solve for f2.  I know the first step is to multiply both sides by f1+f2 to get it out of the denominator.\r<BR>\n" );
document.write( "\n" );
document.write( "this leaves: (f1+f2)F = f1f2   or F(f1)+F(f2) = f1f2    --- I forgot what to do next - except I know I need to isolate f2.\r<BR>\n" );
document.write( "\n" );
document.write( "Thanks! - Cindy Owens </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #169350 by </B><A HREF=/tutors/aboutme.mpl?userid=Earlsdon><B>Earlsdon(6294)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Earlsdon><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=169350\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Try this!<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=F+=+%28f%5B1%5D%2Af%5B2%5D%29%2F%28f%5B1%5D%2Bf%5B2%5D%29 ALIGN=MIDDLE  ALT=\"F+=+%28f%5B1%5D%2Af%5B2%5D%29%2F%28f%5B1%5D%2Bf%5B2%5D%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Your first step is good!<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=F%28f%5B1%5D%2Bf%5B2%5D%29+=+f%5B1%5D%2Af%5B2%5D ALIGN=MIDDLE  ALT=\"F%28f%5B1%5D%2Bf%5B2%5D%29+=+f%5B1%5D%2Af%5B2%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" > Now you need to collect the <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%5B2%5D ALIGN=MIDDLE  ALT=\"f%5B2%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" >'s together. Perform the indicated multiplication on the left side.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=F%2Af%5B1%5D%2BF%2Af%5B2%5D+=+f%5B1%5D%2Af%5B2%5D ALIGN=MIDDLE  ALT=\"F%2Af%5B1%5D%2BF%2Af%5B2%5D+=+f%5B1%5D%2Af%5B2%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" > Now subtract<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=F%2Af%5B2%5D ALIGN=MIDDLE  ALT=\"F%2Af%5B2%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" >from both sides.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=F%2Af%5B1%5D+=+f%5B1%5D%2Af%5B2%5D-F%2Af%5B2%5D ALIGN=MIDDLE  ALT=\"F%2Af%5B1%5D+=+f%5B1%5D%2Af%5B2%5D-F%2Af%5B2%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" > Factor the <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%5B2%5D ALIGN=MIDDLE  ALT=\"f%5B2%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" > on the right side.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=F%2Af%5B1%5D+=+f%5B2%5D%28f%5B1%5D-F%29 ALIGN=MIDDLE  ALT=\"F%2Af%5B1%5D+=+f%5B2%5D%28f%5B1%5D-F%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Finally, divide both sides by<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28f%5B1%5D-F%29 ALIGN=MIDDLE  ALT=\"%28f%5B1%5D-F%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >leaving <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%5B2%5D ALIGN=MIDDLE  ALT=\"f%5B2%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" > on the right side.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28F%2Af%5B1%5D%29%2F%28f%5B1%5D-F%29+=+f%5B2%5D ALIGN=MIDDLE  ALT=\"%28F%2Af%5B1%5D%29%2F%28f%5B1%5D-F%29+=+f%5B2%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" > or<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28f%5B2%5D+=+%28F%2Af%5B1%5D%29%2F%28f%5B1%5D-F%29%29 ALIGN=MIDDLE  ALT=\"highlight%28f%5B2%5D+=+%28F%2Af%5B1%5D%29%2F%28f%5B1%5D-F%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );