document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=804095>Question 804095</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Express as a single fraction:   a^-2 + b^-3\r<BR>\n" );
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document.write( "1/a^2 + 1/b^3 = 1/a^2+b^3.\r<BR>\n" );
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document.write( "This is not correct. Can I get help with my work?\r<BR>\n" );
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document.write( "Thank you. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #484609 by </B><A HREF=/tutors/aboutme.mpl?userid=DrBeeee><B>DrBeeee(684)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=DrBeeee><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=484609\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Your first step is correct, but you still have two fractions. You need to add them to get a single fraction.<BR>\n" );
document.write( "Given:<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%5E%28-2%29+%2B+b%5E%28-3%29 ALIGN=MIDDLE  ALT=\"a%5E%28-2%29+%2B+b%5E%28-3%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > which converts to<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2Fa%5E2+%2B+1%2Fb%5E3 ALIGN=MIDDLE  ALT=\"1%2Fa%5E2+%2B+1%2Fb%5E3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Now you can choose <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%5E2%2Ab%5E3 ALIGN=MIDDLE  ALT=\"a%5E2%2Ab%5E3\"   DISABLED_style= \"max-width:90%; height:auto;\" > for the common denominator of the two fraction in (2) and get, by multiplying by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28a%5E2%2Ab%5E3%29%2F%28a%5E2%2Ab%5E3%29 ALIGN=MIDDLE  ALT=\"%28a%5E2%2Ab%5E3%29%2F%28a%5E2%2Ab%5E3%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > and get<BR>\n" );
document.write( "(3) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b%5E3%2F%28a%5E2%2Ab%5E3%29+%2B+a%5E2%2F%28a%5E2%2Ab%5E3%29 ALIGN=MIDDLE  ALT=\"b%5E3%2F%28a%5E2%2Ab%5E3%29+%2B+a%5E2%2F%28a%5E2%2Ab%5E3%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > or<BR>\n" );
document.write( "(4) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28b%5E3+%2B+a%5E2%29%2F%28a%5E2%2Ab%5E3%29 ALIGN=MIDDLE  ALT=\"%28b%5E3+%2B+a%5E2%29%2F%28a%5E2%2Ab%5E3%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "Answer: the single fraction of (4) </SPAN>\n" );
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