document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=204137>Question 204137</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 7x+y=50<BR>\n" );
document.write( "8x+9y=10 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #154093 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=154093\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (1) 7x +y =50,,,,,y=(50-7x)<BR>\n" );
document.write( "(2)  8x +9y =10<BR>\n" );
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document.write( "subst  (1)  in  (2)<BR>\n" );
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document.write( "8x +9(50-7x) = 10<BR>\n" );
document.write( "8x +450 -63x =10<BR>\n" );
document.write( "-55x  =-440<BR>\n" );
document.write( "x=8<BR>\n" );
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document.write( "Subst  in  (1),,,y=50-7(8),,,,,y= -6<BR>\n" );
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document.write( "check,,,(1) 7(8)+(-6) = 50,,,,ok<BR>\n" );
document.write( "(2) 8(8) +9(-6) = 10,,,,,ok<BR>\n" );
document.write( " </SPAN>\n" );
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