document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=861073>Question 861073</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Determine the value for which the rational expression is undefined.\r<BR>\n" );
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document.write( "x<BR>\n" );
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document.write( "x-7 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #518838 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39618)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=518838\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x<BR>\n" );
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document.write( "x-7\r<BR>\n" );
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document.write( "That is better expressed, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2F%28x-7%29 ALIGN=MIDDLE  ALT=\"x%2F%28x-7%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "The expression is undefined for x-7=0, which means for x=7.<BR>\n" );
document.write( "Why?  Division by zero is impossible. </SPAN>\n" );
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