document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=207973>Question 207973</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve system using substution method<BR>\n" );
document.write( "x+2y=20<BR>\n" );
document.write( "5x-2y=16<BR>\n" );
document.write( "solution<BR>\n" );
document.write( "(?,?) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #157426 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=157426\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x+2y=20 or x=20-2y<BR>\n" );
document.write( "5x-2y=16<BR>\n" );
document.write( "5(20-2y)-2y=16<BR>\n" );
document.write( "100-10y-2y=16<BR>\n" );
document.write( "-12y=-100+16<BR>\n" );
document.write( "-12y=84<BR>\n" );
document.write( "y=-84/-12<BR>\n" );
document.write( "y=7 ans.<BR>\n" );
document.write( "x=2*7=20<BR>\n" );
document.write( "x+14=20<BR>\n" );
document.write( "x=20-14<BR>\n" );
document.write( "x=6 ans.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( "5*6-2*7=16<BR>\n" );
document.write( "30-14=16<BR>\n" );
document.write( "16=16\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );