document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=625717>Question 625717</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Evaluate: 3^-1-6^-1 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #393766 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=393766\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Evaluate: 3^-1-6^-1<BR>\n" );
document.write( "----------<BR>\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3%5E-1%2F1+-+6%5E-1%2F1 ALIGN=MIDDLE  ALT=\"3%5E-1%2F1+-+6%5E-1%2F1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "For 3^-1, multiply NUM & DEN by 3^1\r<BR>\n" );
document.write( "\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%283%5E-1%2A3%5E1%29%2F3%5E1+-+6%5E-1%2F1 ALIGN=MIDDLE  ALT=\"%283%5E-1%2A3%5E1%29%2F3%5E1+-+6%5E-1%2F1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%283%5E0%29%2F3%5E1+-+6%5E-1%2F1 ALIGN=MIDDLE  ALT=\"%283%5E0%29%2F3%5E1+-+6%5E-1%2F1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "3^0 = 1<BR>\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F3%5E1+-+6%5E-1%2F1 ALIGN=MIDDLE  ALT=\"1%2F3%5E1+-+6%5E-1%2F1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F3+-+6%5E-1%2F1 ALIGN=MIDDLE  ALT=\"1%2F3+-+6%5E-1%2F1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "========================<BR>\n" );
document.write( "Notice that the sign of the exponent changes, and it moves from NUM to DEN.<BR>\n" );
document.write( "The vice versa is also true.<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "Doing the same for 6^-1,<BR>\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F3+-+1%2F6 ALIGN=MIDDLE  ALT=\"1%2F3+-+1%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "= 1/6 </SPAN>\n" );
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