document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=175480>Question 175480</A>: <I><SPAN STYLE=\"word-break: break-all;\"> i need help doing this problem:\r<BR>\n" );
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document.write( "-3a + b = 4          \r<BR>\n" );
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document.write( "-9a + 5b = -1\r<BR>\n" );
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document.write( "need this answered tonight!!! thank you!! \r<BR>\n" );
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document.write( "(this is a really neat place!!) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #130558 by </B><A HREF=/tutors/aboutme.mpl?userid=Mathtut><B>Mathtut(3670)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Mathtut><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=130558\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> this is a system of equation that we will solve similtaneously<BR>\n" );
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document.write( "-3a + b = 4 ....eq 1         <BR>\n" );
document.write( "-9a + 5b = -1...eq 2<BR>\n" );
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document.write( "multiply eq 1 by -3<BR>\n" );
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document.write( "9a-3b=-12....revised eq 1<BR>\n" );
document.write( "-9a+5b=-1....eq 2<BR>\n" );
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document.write( "I lined the 2 equations up so you can see that when we add the equations together the a terms are eliminated because 9a-9a=0. We are left with <BR>\n" );
document.write( "-3b+5b=-12-1.<BR>\n" );
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document.write( "2b=-13<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28b=-13%2F2%29 ALIGN=MIDDLE  ALT=\"highlight%28b=-13%2F2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "now take b's found value and plug it back into either equation. I will use eq 1<BR>\n" );
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document.write( "-3a + (-13/2)=4 ........now multiply all terms by 2 to get rid of fraction<BR>\n" );
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document.write( "-6a-13=8<BR>\n" );
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document.write( "-6a=21<BR>\n" );
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