document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1074725>Question 1074725</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The sum of three numbers is 20. The difference of the first two numbers is 5 and the third number is 4 times the sum of the first two </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #689382 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39630)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=689382\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x, y, z\r<BR>\n" );
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document.write( "Assumption made here is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%3Cy ALIGN=MIDDLE  ALT=\"x%3Cy\"   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=system%28x%2By%2Bz=20%2Cy-x=5%2Cz=4%28x%2By%29%29 ALIGN=MIDDLE  ALT=\"system%28x%2By%2Bz=20%2Cy-x=5%2Cz=4%28x%2By%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "(corrected)---\r<BR>\n" );
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document.write( "Substituting for z,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%28x%2By%2B4%28x%2By%29=20%2C-x%2By=5%29 ALIGN=MIDDLE  ALT=\"system%28x%2By%2B4%28x%2By%29=20%2C-x%2By=5%29\"   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=system%28x%2By=4%2C-x%2By=5%29 ALIGN=MIDDLE  ALT=\"system%28x%2By=4%2C-x%2By=5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The system here ready for use of Elimination Method.<BR>\n" );
document.write( "ADD:  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2y=9 ALIGN=MIDDLE  ALT=\"2y=9\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28y=9%2F2%29 ALIGN=MIDDLE  ALT=\"highlight_green%28y=9%2F2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "SUBTRACT:  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-2x=1 ALIGN=MIDDLE  ALT=\"-2x=1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28x=-1%2F2%29 ALIGN=MIDDLE  ALT=\"highlight_green%28x=-1%2F2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Use x and y to find z.\r<BR>\n" );
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document.write( "(posted earlier -  incorrect -<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2By=20-z ALIGN=MIDDLE  ALT=\"x%2By=20-z\"   DISABLED_style= \"max-width:90%; height:auto;\" >    From first equation<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z=4%2820-z%29 ALIGN=MIDDLE  ALT=\"z=4%2820-z%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >   Substituted into equation #3<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z=80-4z ALIGN=MIDDLE  ALT=\"z=80-4z\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3z=80 ALIGN=MIDDLE  ALT=\"3z=80\"   DISABLED_style= \"max-width:90%; height:auto;\" >-----MISTAKE... All the rest below is wrong...<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z=80%2F3 ALIGN=MIDDLE  ALT=\"z=80%2F3\"   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=x%2By%2B80%2F3=20 ALIGN=MIDDLE  ALT=\"x%2By%2B80%2F3=20\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3x%2B3y%2B80=60 ALIGN=MIDDLE  ALT=\"3x%2B3y%2B80=60\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3x%2B3y=-20 ALIGN=MIDDLE  ALT=\"3x%2B3y=-20\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Simpler system in just x and y<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%283x%2B3y=-20%2C-x%2By=5%29 ALIGN=MIDDLE  ALT=\"system%283x%2B3y=-20%2C-x%2By=5%29\"   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=%283x%2B3y%29%2B%28-3x%2B3y%29=-20%2B5 ALIGN=MIDDLE  ALT=\"%283x%2B3y%29%2B%28-3x%2B3y%29=-20%2B5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=6y=-15 ALIGN=MIDDLE  ALT=\"6y=-15\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2y=-5 ALIGN=MIDDLE  ALT=\"2y=-5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=-5%2F2 ALIGN=MIDDLE  ALT=\"y=-5%2F2\"   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=y-x=5 ALIGN=MIDDLE  ALT=\"y-x=5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y-5=x ALIGN=MIDDLE  ALT=\"y-5=x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=-5%2F2-5 ALIGN=MIDDLE  ALT=\"x=-5%2F2-5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=-5%2F2-10%2F2 ALIGN=MIDDLE  ALT=\"x=-5%2F2-10%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=-15%2F2 ALIGN=MIDDLE  ALT=\"x=-15%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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