document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1137768>Question 1137768</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The Mackenzie River is 1183 km longer than the St Lawrence River. The sum of their lengths is 7299 km. How long is each river?	 						    		   \r<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 #755646 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20849)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=755646\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \r<BR>\n" );
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document.write( "let the Mackenzie River length be <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=L ALIGN=MIDDLE  ALT=\"L\"   DISABLED_style= \"max-width:90%; height:auto;\" > and the St Lawrence River length be <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=L%5B1%5D ALIGN=MIDDLE  ALT=\"L%5B1%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "The Mackenzie River is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1183km ALIGN=MIDDLE  ALT=\"1183km\"   DISABLED_style= \"max-width:90%; height:auto;\" > longer than the St Lawrence River.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=L=L%5B1%5D%2B1183km ALIGN=MIDDLE  ALT=\"L=L%5B1%5D%2B1183km\"   DISABLED_style= \"max-width:90%; height:auto;\" >....eq.1\r<BR>\n" );
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document.write( " The sum of their lengths is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7299km ALIGN=MIDDLE  ALT=\"7299km\"   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=L%2BL%5B1%5D=7299km ALIGN=MIDDLE  ALT=\"L%2BL%5B1%5D=7299km\"   DISABLED_style= \"max-width:90%; height:auto;\" >........substitute <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=L ALIGN=MIDDLE  ALT=\"L\"   DISABLED_style= \"max-width:90%; height:auto;\" > from eq.1\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=L%5B1%5D%2B1183km%2BL%5B1%5D=7299km ALIGN=MIDDLE  ALT=\"L%5B1%5D%2B1183km%2BL%5B1%5D=7299km\"   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=2L%5B1%5D=7299km-1183km ALIGN=MIDDLE  ALT=\"2L%5B1%5D=7299km-1183km\"   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=2L%5B1%5D=6116km ALIGN=MIDDLE  ALT=\"2L%5B1%5D=6116km\"   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=L%5B1%5D=6116km%2F2 ALIGN=MIDDLE  ALT=\"L%5B1%5D=6116km%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=L%5B1%5D=3058km ALIGN=MIDDLE  ALT=\"L%5B1%5D=3058km\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "now go to eq.1 \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=L=L%5B1%5D%2B1183km ALIGN=MIDDLE  ALT=\"L=L%5B1%5D%2B1183km\"   DISABLED_style= \"max-width:90%; height:auto;\" >....eq.1, substitute <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=L%5B1%5D ALIGN=MIDDLE  ALT=\"L%5B1%5D\"   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=L=3058km%2B1183km ALIGN=MIDDLE  ALT=\"L=3058km%2B1183km\"   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=L=4241km ALIGN=MIDDLE  ALT=\"L=4241km\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "so, the  Mackenzie River is  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4241km ALIGN=MIDDLE  ALT=\"4241km\"   DISABLED_style= \"max-width:90%; height:auto;\" > long, and the St Lawrence River is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3058km ALIGN=MIDDLE  ALT=\"3058km\"   DISABLED_style= \"max-width:90%; height:auto;\" > long\r<BR>\n" );
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