document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=407991>Question 407991</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Could someone please show me how to Perform the indicated operation: -21 - (-9)/-21 -(-21)<BR>\n" );
document.write( "I believe that I  add numerator 21 and 9 then add the denominator which would be 21+21<BR>\n" );
document.write( "but I am not sure. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #287483 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=287483\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( " <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28-21+-%28-9%29%29%2F%28-21+-%28-21%29%29 ALIGN=MIDDLE  ALT=\"%28-21+-%28-9%29%29%2F%28-21+-%28-21%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >...\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28-21+%2B9%29%2F%28-21+%2B+21%29 ALIGN=MIDDLE  ALT=\"%28-21+%2B9%29%2F%28-21+%2B+21%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28-12+%29%2F0 ALIGN=MIDDLE  ALT=\"%28-12+%29%2F0\"   DISABLED_style= \"max-width:90%; height:auto;\" >.........division by zero doesn't work...it doesn't make sense  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );