document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=106371>Question 106371</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;\"> Question 54.  This is dealing with adding/subtracting rational expressions \r<BR>\n" );
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document.write( "(the below are supposed to be fractions, but I didn't know how to write them in here so you'd understand.  Sorry if it doesn't come across pretty)\r<BR>\n" );
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document.write( " 2    -   3<BR>\n" );
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document.write( "5w+10   2w-4\r<BR>\n" );
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document.write( "This is what I have so far, but I am a bit confused.\r<BR>\n" );
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document.write( "I know that I need to find the LCD.  Because of the numerators the way they are, I know that they are:\r<BR>\n" );
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document.write( "5w+10  which can be factored to 5(w+2)<BR>\n" );
document.write( "2w-4   which can be factored to 2(w-2)\r<BR>\n" );
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document.write( "So, still they don't match as they have in other equations.  \r<BR>\n" );
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document.write( "2*2(w-2)     -     3*5(w+2)<BR>\n" );
document.write( "___________        __________<BR>\n" );
document.write( "5(w+2)*2(w-2)      2(w-2)*5(w+2)                Not sure if I did that right\r<BR>\n" );
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document.write( "This then becomes:\r<BR>\n" );
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document.write( "4(w-2)        -     15(w+2)<BR>\n" );
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document.write( "5(w+2)*2(w-2)     2(w-2)*5(w+2)\r<BR>\n" );
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document.write( "I am going to stop there, because I have a horrible feeling that I am way off track.  Can you please help?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #77381 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=77381\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 2    -   3<BR>\n" );
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document.write( "5w+10   2w-4<BR>\n" );
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document.write( "Factor the denominators:\r<BR>\n" );
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document.write( "[2/(5(w+2)] - [3/(2(w-2)]\r<BR>\n" );
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document.write( "You need a common denominator.<BR>\n" );
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document.write( "The least common denominator (lcd) is 10(w+2)(w-2)<BR>\n" );
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document.write( "Rewrite each fraction with the lcd as its denominator:<BR>\n" );
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document.write( "[2*2(w-2)]/lcd - [3*5(w+2)]/lcd\r<BR>\n" );
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document.write( "Since the denominators are now the same you work with the numerators:\r<BR>\n" );
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document.write( "= [4(w-2)-15(w+2)]/lcd\r<BR>\n" );
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document.write( "Simplify the numerator:\r<BR>\n" );
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document.write( "= [-11w-38]/[10(w+2)(w-2)\r<BR>\n" );
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document.write( "This could be written as:\r<BR>\n" );
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document.write( "= [-11w-38]/[10(w^2-4)]\r<BR>\n" );
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document.write( "=================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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