document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=459938>Question 459938</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I'm 46 and am trying to refresh my algebra....\r<BR>\n" );
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document.write( "How would I solve this by using substitution or the addition-or- subtraction method?\r<BR>\n" );
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document.write( "2m=n-3<BR>\n" );
document.write( "3m=2n-9\r<BR>\n" );
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document.write( "Thanks<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 #315420 by </B><A HREF=/tutors/aboutme.mpl?userid=Gogonati><B>Gogonati(855)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Gogonati><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/cgi-bin/show-face.mpl?user=Gogonati><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=315420\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Multiply the first equation by -2 and get:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%28-4m=-2n%2B6%2C+3m=2n-9%29 ALIGN=MIDDLE  ALT=\"system%28-4m=-2n%2B6%2C+3m=2n-9%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, add two equations to eliminate n.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-m=-3 ALIGN=MIDDLE  ALT=\"-m=-3\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m=3 ALIGN=MIDDLE  ALT=\"m=3\"   DISABLED_style= \"max-width:90%; height:auto;\" >. Now plug in the first equation m=3 to find n=?\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2A3=n-3 ALIGN=MIDDLE  ALT=\"2%2A3=n-3\"   DISABLED_style= \"max-width:90%; height:auto;\" > solving this equation we get <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=n=9 ALIGN=MIDDLE  ALT=\"n=9\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Answer: The solution of the system is the ordered pair (3, 9). </SPAN>\n" );
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