document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=83282>Question 83282</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can someone please help me with this. It is probably some thing simple that I am overloking but this is beating me down. The numbers arent relavant here that's why i did not include them i am just trying to understand the correct way to write the equation in order to solve first for [Rm], I was provided with a number to reprsent 'Ra, Rf, and B'. and secondly I meed to know how to write the equation to solve for [Rf] with the known information being 'Ra, Rm,and B'. The equation i am starting out with is: So the question is how do i write the equation to solve for Rm and also for Rf using this equation as the base:    <BR>\n" );
document.write( "Ra = Rf + B(Rm - Rf).<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #59794 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=59794\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I meed to know how to write the equation to solve for [Rf] with the known information being 'Ra, Rm,and B'. The equation i am starting out with is: So the question is how do i write the equation to solve for Rm and also for Rf using this equation as the base: <BR>\n" );
document.write( "Ra = Rf + B(Rm - Rf).<BR>\n" );
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document.write( "Solving for Rm:<BR>\n" );
document.write( "Subtract Rf from both sides to get:<BR>\n" );
document.write( "Ra-Rf = B(Rm-Rf)<BR>\n" );
document.write( "Divide both sides by \"B\" to get:<BR>\n" );
document.write( "(Ra-Rf)/B = Rm - Rf<BR>\n" );
document.write( "Add Rf to both sides to get:<BR>\n" );
document.write( "Rm= [(Ra-Rf)/B] + Rf<BR>\n" );
document.write( "----------------------------<BR>\n" );
document.write( "Solving for Rf:<BR>\n" );
document.write( "Ra = Rf + B(Rm - Rf)<BR>\n" );
document.write( "Ra = Rf + BRm - BRf<BR>\n" );
document.write( "Get the Rf terms together:<BR>\n" );
document.write( "Ra-BRm = Rf(1-B)<BR>\n" );
document.write( "Divide both sides by 1-B to get:<BR>\n" );
document.write( "Rf = (Ra-BRm)/(1-B)<BR>\n" );
document.write( "===========<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
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document.write( "<BR>\n" );
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document.write( "\n" );
document.write( "===================<BR>\n" );
document.write( "Is that what you wanted?<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );