document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=21662>Question 21662</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can you help me with this?  It's driving me crazy!\r<BR>\n" );
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document.write( "Simplify:  21n-6/7n-4\r<BR>\n" );
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document.write( "The \"-6\" and \"-4\" are negative exponents.\r<BR>\n" );
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document.write( "Thank you for your help! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #10448 by </B><A HREF=/tutors/aboutme.mpl?userid=longjonsilver><B>longjonsilver(2297)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=longjonsilver><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=longjonsilver><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=10448\">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=%2821n%5E-6%29%2F%287n%5E-4%29 ALIGN=MIDDLE  ALT=\"%2821n%5E-6%29%2F%287n%5E-4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "very simple. <BR>\n" );
document.write( "1. Look at the coefficients: 21/7 is 3.\r<BR>\n" );
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document.write( "2. Look at the n terms. We have a division. Powers, on division, subtract, so we have (-6) - (-4). This simplifies to -6+4 --> -2\r<BR>\n" );
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document.write( "so we get <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3n%5E-2 ALIGN=MIDDLE  ALT=\"3n%5E-2\"   DISABLED_style= \"max-width:90%; height:auto;\" >, which can be left like this or re-written as <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3%2Fn%5E2 ALIGN=MIDDLE  ALT=\"3%2Fn%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "jon.<BR>\n" );
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