document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=38855>Question 38855</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0073016020/algebrahomeworkh>Beginning Algebra</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Okay, I don't even know where to begin with this one...\r<BR>\n" );
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document.write( "Subtract\r<BR>\n" );
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document.write( "5/y-7 minus 1/y+1\r<BR>\n" );
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document.write( "Please help me !!  LOL </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #24323 by </B><A HREF=/tutors/aboutme.mpl?userid=fractalier><B>fractalier(6550)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fractalier><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=fractalier><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=24323\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I teach my students a method called the \"criss-cross\" method...<BR>\n" );
document.write( "Whenever you have fractions like this you can apply a short-cut...<BR>\n" );
document.write( "Goes like this...<BR>\n" );
document.write( "A/B + C/D = (AD + BC) / BD<BR>\n" );
document.write( "no matter what A, B, C, and D are and it works for adding or subtracting...<BR>\n" );
document.write( "so from<BR>\n" );
document.write( "5/(y-7) - 1/(y+1)<BR>\n" );
document.write( "we criss cross and get<BR>\n" );
document.write( "[5(y + 1) - (y - 7)] / [(y - 7)(y + 1)] =<BR>\n" );
document.write( "5y + 5 - y + 7 / [(y - 7)(y + 1)] =<BR>\n" );
document.write( "4y + 12 / [(y - 7)(y + 1)]<BR>\n" );
document.write( "and we're done... </SPAN>\n" );
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