document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=200627>Question 200627</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve by the substitution method<BR>\n" );
document.write( "7m+n=27<BR>\n" );
document.write( "m-8n=69 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #150884 by </B><A HREF=/tutors/aboutme.mpl?userid=RAY100><B>RAY100(1637)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=RAY100><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=150884\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (1)  7m +n = 27<BR>\n" );
document.write( "(2)  m-8n = 69 ,,,,,,,m= (8n +69)<BR>\n" );
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document.write( "subst  (2)  in  (1)<BR>\n" );
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document.write( "7(8n+69) +n =  27<BR>\n" );
document.write( "56n +483 +n = 27<BR>\n" );
document.write( "57n = -456<BR>\n" );
document.write( "n = -8<BR>\n" );
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document.write( "subst  in  (2) m= (8n +69) = 8(-8) -69 = -64 +69 = 5<BR>\n" );
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document.write( "Answer ,,,,,m=5,,,,n=-8<BR>\n" );
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document.write( "check<BR>\n" );
document.write( "(1) 7(5) +(-8) = 35 -8 = 27,,,,,ok<BR>\n" );
document.write( "(2) (5) -8(-8) = 5+64 =69,,,,,,,,ok<BR>\n" );
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