document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=837343>Question 837343</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The sum of three numbers is forty-two. The second number is twice the first number and the third number is three less than the second number. Find the three numbers </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #504565 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39620)</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=504565\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x, y, and z are the numbers.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2By%2Bz=42 ALIGN=MIDDLE  ALT=\"x%2By%2Bz=42\"   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=2x ALIGN=MIDDLE  ALT=\"y=2x\"   DISABLED_style= \"max-width:90%; height:auto;\" >, and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z=y-3 ALIGN=MIDDLE  ALT=\"z=y-3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Any route you see or find, try.<BR>\n" );
document.write( "One I see is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z=42-x-y ALIGN=MIDDLE  ALT=\"z=42-x-y\"   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=y-3=42-x-y ALIGN=MIDDLE  ALT=\"z=y-3=42-x-y\"   DISABLED_style= \"max-width:90%; height:auto;\" >, to equate expressions for z.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2y%2Bx=42%2B3 ALIGN=MIDDLE  ALT=\"2y%2Bx=42%2B3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2B2y=45 ALIGN=MIDDLE  ALT=\"x%2B2y=45\"   DISABLED_style= \"max-width:90%; height:auto;\" >----- which only uses x and y.<BR>\n" );
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document.write( "One of the equations from the description also uses only x and y, so we have this simple system of two variables:<BR>\n" );
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document.write( "y=2x<BR>\n" );
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document.write( "x+2y=45<BR>\n" );
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document.write( "A simple substitution will be best next step.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2B2%2A2x=45 ALIGN=MIDDLE  ALT=\"x%2B2%2A2x=45\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5x=45 ALIGN=MIDDLE  ALT=\"5x=45\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28x=9%29 ALIGN=MIDDLE  ALT=\"highlight%28x=9%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >-------You have one variable's value solved.<BR>\n" );
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document.write( "Also created y=2x from the description, so <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=2%2A9=highlight%2818=y%29 ALIGN=MIDDLE  ALT=\"y=2%2A9=highlight%2818=y%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > ----- another variable found.<BR>\n" );
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document.write( "Given from description<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z=y-3 ALIGN=MIDDLE  ALT=\"z=y-3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z=18-3 ALIGN=MIDDLE  ALT=\"z=18-3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28z=15%29 ALIGN=MIDDLE  ALT=\"highlight%28z=15%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >------the last variable found. </SPAN>\n" );
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