document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=121989>Question 121989</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am not sure if I am doing this right. Solve for K.\r<BR>\n" );
document.write( "\n" );
document.write( "   a/b=b/a+1/k<BR>\n" );
document.write( "   (bak) a/b=(bak)b/a+1/k(bak)<BR>\n" );
document.write( "   a^2k=b^2k+ba<BR>\n" );
document.write( "   a^2k-b^2k=ba<BR>\n" );
document.write( "   k(a^2-b^2)=ab<BR>\n" );
document.write( "   k=ab/a^2-b^2 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #89561 by </B><A HREF=/tutors/aboutme.mpl?userid=oscargut><B>oscargut(2103)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=oscargut><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=oscargut><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=89561\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Yes you are right, \r<BR>\n" );
document.write( "\n" );
document.write( "obs: a^2-b^2 must be not equal to 0\r<BR>\n" );
document.write( "\n" );
document.write( "Other way\r<BR>\n" );
document.write( "\n" );
document.write( "a/b=b/a+1/k then (a/b)-(b/a)=1/k then (a^2-b^2)/ab = 1/k<BR>\n" );
document.write( "then k= (ab)/(a^2-b^2) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );