document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=547239>Question 547239</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve by the elimination method.<BR>\n" );
document.write( "7r-3s=3<BR>\n" );
document.write( "3r+7s=51<BR>\n" );
document.write( "I think there is no solution but I'm not sure if I'm correct. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #356312 by </B><A HREF=/tutors/aboutme.mpl?userid=mathie123><B>mathie123(224)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mathie123><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=356312\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> There are a few ways to do this, depending on what variable you want to eliminate.  Just to make it simple, I will eliminate my r.  <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7r-3s=3 ALIGN=MIDDLE  ALT=\"7r-3s=3\"   DISABLED_style= \"max-width:90%; height:auto;\" >         (1)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3r%2B7s=51 ALIGN=MIDDLE  ALT=\"3r%2B7s=51\"   DISABLED_style= \"max-width:90%; height:auto;\" >        (2)\r<BR>\n" );
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document.write( "I will multiply my equation (1) by 3 (the number in front of r in equation (2)), and my equation (2) by 7 (you guessed it.... the number in front of r in equation (1)).  This leaves:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=21r-9s=9 ALIGN=MIDDLE  ALT=\"21r-9s=9\"   DISABLED_style= \"max-width:90%; height:auto;\" >           (3)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=21r%2B49s=357 ALIGN=MIDDLE  ALT=\"21r%2B49s=357\"   DISABLED_style= \"max-width:90%; height:auto;\" >        (4)\r<BR>\n" );
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document.write( "Now Subtracting equation (4) by equation (3) we get:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%2821r-9s%29-%2821r%2B49s%29=9-357 ALIGN=MIDDLE  ALT=\"%2821r-9s%29-%2821r%2B49s%29=9-357\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-9s-49s=-348 ALIGN=MIDDLE  ALT=\"-9s-49s=-348\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-58s=-348 ALIGN=MIDDLE  ALT=\"-58s=-348\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-58s%2F-58=-348%2F-58 ALIGN=MIDDLE  ALT=\"-58s%2F-58=-348%2F-58\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=s=6 ALIGN=MIDDLE  ALT=\"s=6\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Now we can substitute this value of s into any of the equations (1)-(4).  I will put it into equation (1).  <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7r-3%2A6=3 ALIGN=MIDDLE  ALT=\"7r-3%2A6=3\"   DISABLED_style= \"max-width:90%; height:auto;\" >      <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7r-18=3 ALIGN=MIDDLE  ALT=\"7r-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=7r-18%2B18=3%2B18 ALIGN=MIDDLE  ALT=\"7r-18%2B18=3%2B18\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7r=21 ALIGN=MIDDLE  ALT=\"7r=21\"   DISABLED_style= \"max-width:90%; height:auto;\" >  <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7r%2F7=21%2F7 ALIGN=MIDDLE  ALT=\"7r%2F7=21%2F7\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r=3 ALIGN=MIDDLE  ALT=\"r=3\"   DISABLED_style= \"max-width:90%; height:auto;\" >          </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );