document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=186410>Question 186410</A>: <I><SPAN STYLE=\"word-break: break-all;\"> systems by elimination \r<BR>\n" );
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document.write( "6x-7y=21<BR>\n" );
document.write( "3x+7y=6\r<BR>\n" );
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document.write( "answer:(3, -3/7)\r<BR>\n" );
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document.write( "need a full break down of how my book got this answer i understand how they got the 3 but dont understand how they got -3/7 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #139714 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=139714\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If you understand how they got the '3' in the ordered pair <IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE \left(3,-\frac{3}{7}\right)\">, then this simply means that they found that <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=3 ALIGN=MIDDLE  ALT=\"x=3\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Now pick any equation (I'm going to pick the first one, it doesn't matter which one you choose). \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=6x-7y=21 ALIGN=MIDDLE  ALT=\"6x-7y=21\"   DISABLED_style= \"max-width:90%; height:auto;\" > Start with the first equation\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=6%283%29-7y=21 ALIGN=MIDDLE  ALT=\"6%283%29-7y=21\"   DISABLED_style= \"max-width:90%; height:auto;\" > Plug in the previously found solution <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=3 ALIGN=MIDDLE  ALT=\"x=3\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=18-7y=21 ALIGN=MIDDLE  ALT=\"18-7y=21\"   DISABLED_style= \"max-width:90%; height:auto;\" > Multiply\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-7y=21-18 ALIGN=MIDDLE  ALT=\"-7y=21-18\"   DISABLED_style= \"max-width:90%; height:auto;\" > Subtract 18 from both sides.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-7y=3 ALIGN=MIDDLE  ALT=\"-7y=3\"   DISABLED_style= \"max-width:90%; height:auto;\" > Combine like terms.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=3%2F%28-7%29 ALIGN=MIDDLE  ALT=\"y=3%2F%28-7%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Divide both sides by -7 to isolate 'y'\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=-3%2F7 ALIGN=MIDDLE  ALT=\"y=-3%2F7\"   DISABLED_style= \"max-width:90%; height:auto;\" > Reduce.\r<BR>\n" );
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document.write( "So the other solution is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=-3%2F7 ALIGN=MIDDLE  ALT=\"y=-3%2F7\"   DISABLED_style= \"max-width:90%; height:auto;\" > which means that the ordered pair solution is <IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE \left(3,-\frac{3}{7}\right)\"> </SPAN>\n" );
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