document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=213772>Question 213772</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve the system of equation<BR>\n" );
document.write( "-x+3y=9<BR>\n" );
document.write( "3x-2y=4 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #161495 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=161495\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> -x+3y=9 multipl this equation by 3 & add.<BR>\n" );
document.write( "3x-2y=4<BR>\n" );
document.write( "-3x+9y=27<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "7y=31<BR>\n" );
document.write( "y=31/7 ans.<BR>\n" );
document.write( "-x+3*31/7=9<BR>\n" );
document.write( "-x+93/7=9<BR>\n" );
document.write( "-x=9-93/7<BR>\n" );
document.write( "-x=(9*7-93)/7<BR>\n" );
document.write( "-x=(63-93)/7<BR>\n" );
document.write( "-x=-30/7<BR>\n" );
document.write( "x=30/7 ans.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( "3*30/7-2*31/7=4<BR>\n" );
document.write( "90/7-62/7=4<BR>\n" );
document.write( "28/7=4<BR>\n" );
document.write( "4=4<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );