document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1116106>Question 1116106</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I'm trying to brush up on my math skills 45 years after high school.  Most of it is pretty basic but this one has me stumped.\r<BR>\n" );
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document.write( "( b + a ) / ab = 1 / f<BR>\n" );
document.write( "solve for b\r<BR>\n" );
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document.write( "I've mashed it all around but I just can't tease out the b.  I even tried working backward from the answer.  How is this done?  The answer in the back of the book is:\r<BR>\n" );
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document.write( "b = fa / ( a - f ) or b = -fa / ( f - a )\r<BR>\n" );
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document.write( "if you're interested.\r<BR>\n" );
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document.write( "Thank you,<BR>\n" );
document.write( "Jim </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #730933 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=730933\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28b+%2B+a%29%2F%28ab%29+=+1%2Ff ALIGN=MIDDLE  ALT=\"%28b+%2B+a%29%2F%28ab%29+=+1%2Ff\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "cross multiply<BR>\n" );
document.write( "f(b+a) = ab<BR>\n" );
document.write( "fb + fa = ab<BR>\n" );
document.write( "fb - ab = -fa<BR>\n" );
document.write( "Factor out b<BR>\n" );
document.write( "b(f-a) = -fa<BR>\n" );
document.write( "b = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-%28fa%29%2F%28f-a%29 ALIGN=MIDDLE  ALT=\"-%28fa%29%2F%28f-a%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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