document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=207842>Question 207842</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve system using addition method<BR>\n" );
document.write( "-4x+y=4<BR>\n" );
document.write( "-16x-4y=16<BR>\n" );
document.write( "solution (?,?) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #157204 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=157204\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> -4x+y=4 multiply by 4 & add<BR>\n" );
document.write( "-16x-4y=16<BR>\n" );
document.write( "-16x+4y=16<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "-32y=32<BR>\n" );
document.write( "y=32/-32<BR>\n" );
document.write( "y=-1 ans.<BR>\n" );
document.write( "-4x-1=4<BR>\n" );
document.write( "-4x=4+1<BR>\n" );
document.write( "-4x=5<BR>\n" );
document.write( "x=5/-4 <BR>\n" );
document.write( "x=-5/4ans.<BR>\n" );
document.write( "solution (-5/4,-1)<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( "-16*(-5/4)+4*-1=16<BR>\n" );
document.write( "80/4-4=16<BR>\n" );
document.write( "20-4=16<BR>\n" );
document.write( "16=16<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );