document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=236940>Question 236940</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 5/X = X/20<BR>\n" );
document.write( "Do I use the positive solution, the negative solution, or both? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #174294 by </B><A HREF=/tutors/aboutme.mpl?userid=solver91311><B>solver91311(24713)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=solver91311><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=solver91311><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=174294\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font face=\"Garamond\" size=\"+2\">\r<BR>\n" );
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document.write( "Well, since:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE \ \ \ \ \ \ \ \ \ \ \frac{5}{10}\ =\ \frac{10}{20}\">\r<BR>\n" );
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document.write( "and\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE \ \ \ \ \ \ \ \ \ \ \frac{5}{-10}\ =\ \frac{-10}{20}\">\r<BR>\n" );
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document.write( "From a purely mathematical point of view, either solution makes the original equation a true statement, and therefore both solutions are members of the solution set.\r<BR>\n" );
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document.write( "On the other hand, if you are using a proportion to solve a physical problem where the answer is a positive measure of something, then you would certainly exclude the negative root.  On the other hand, you might have a problem that requires you to find a root that is less than zero -- hence you would exclude the positive root.\r<BR>\n" );
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document.write( "So, you tell me.\r<BR>\n" );
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document.write( "John<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE e^{i\pi} + 1 = 0\"><BR>\n" );
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