document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=779540>Question 779540</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The directions say:Compute and simplify each of the following rational expressions.<BR>\n" );
document.write( "7/(n-4)+8/(4-n)\r<BR>\n" );
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document.write( "So far I understand that I need to make the denominators the same so I have:<BR>\n" );
document.write( "7/(n-4)+8/-(n+4)<BR>\n" );
document.write( "But I am not sure if im supposed to multiply (-1) to 7/(n-4) and the numerator 8 from the other fraction. <BR>\n" );
document.write( "The teacher showed us what to do but I forget.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #475275 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=475275\">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=+7+%2F+%28+n-4+%29+%2B+8+%2F+%28+4-n+%29+ ALIGN=MIDDLE  ALT=\"+7+%2F+%28+n-4+%29+%2B+8+%2F+%28+4-n+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Multiply the top and bottom of the 2nd<BR>\n" );
document.write( "term by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+-1+ ALIGN=MIDDLE  ALT=\"+-1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+7+%2F+%28+n-4+%29+%2B+%28-8%29+%2F+%28-1%2A%28+4-n+%29%29+ ALIGN=MIDDLE  ALT=\"+7+%2F+%28+n-4+%29+%2B+%28-8%29+%2F+%28-1%2A%28+4-n+%29%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+7+%2F+%28+n-4+%29+%2B+%28-8%29+%2F+%28+n-4+%29+ ALIGN=MIDDLE  ALT=\"+7+%2F+%28+n-4+%29+%2B+%28-8%29+%2F+%28+n-4+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "You can factor out <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F%28+n-4+%29+ ALIGN=MIDDLE  ALT=\"+1%2F%28+n-4+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+1%2F%28+n-4+%29+%29%2A%28+7+-+8+%29+ ALIGN=MIDDLE  ALT=\"+%28+1%2F%28+n-4+%29+%29%2A%28+7+-+8+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+-1+%2F+%28+n-4+%29+ ALIGN=MIDDLE  ALT=\"+-1+%2F+%28+n-4+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "You can get rid of the negative sign also<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1+%2F+%28-1%2A%28+n-4+%29%29+ ALIGN=MIDDLE  ALT=\"+1+%2F+%28-1%2A%28+n-4+%29%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1+%2F+%28+4-n+%29+ ALIGN=MIDDLE  ALT=\"+1+%2F+%28+4-n+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > answer<BR>\n" );
document.write( "OK\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );