document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=469990>Question 469990</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 5x + 4<BR>\n" );
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document.write( " x - 7\r<BR>\n" );
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document.write( "find any numbers for which each rational expression is undefined? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #322406 by </B><A HREF=/tutors/aboutme.mpl?userid=sofiyac><B>sofiyac(983)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=sofiyac><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=sofiyac><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=322406\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> it's undefined for x=7 since<BR>\n" );
document.write( "x-7=0<BR>\n" );
document.write( "x=7<BR>\n" );
document.write( "we can't divide by zero, so x can't be 7 </SPAN>\n" );
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