document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=351564>Question 351564</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is r:\r<BR>\n" );
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document.write( "1/r=a/r1+b/r2\r<BR>\n" );
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document.write( "Thanks in advance </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #251197 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=251197\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> What is r: <BR>\n" );
document.write( "1/r=a/r1+b/r2 <BR>\n" );
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document.write( "I assume the \"1\" and \"2\" are subscripts.<BR>\n" );
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document.write( "1/r = (ar2+br1)/(r1r2)<BR>\n" );
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document.write( "Invert to get:<BR>\n" );
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document.write( "r = (r1r2)/(ar2+br1)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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