document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=164699>Question 164699</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve the system by addition or substitution.<BR>\n" );
document.write( "4x - 4y = -16<BR>\n" );
document.write( "y = 5x - 8 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #121372 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=121372\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 4x - 4y = -16<BR>\n" );
document.write( "y = 5x - 8<BR>\n" );
document.write( "4X-4(5X-8)=-16<BR>\n" );
document.write( "4X-20X+32=-16<BR>\n" );
document.write( "-16X=-16-32<BR>\n" );
document.write( "-16X=-48<BR>\n" );
document.write( "X=-48/-16<BR>\n" );
document.write( "X=3 ANSWER.<BR>\n" );
document.write( "4*3-4Y=-16<BR>\n" );
document.write( "12-4Y=-16<BR>\n" );
document.write( "-4Y=-16-12<BR>\n" );
document.write( "-4Y=-28<BR>\n" );
document.write( "Y=-28/-4<BR>\n" );
document.write( "Y=7 ANSWER.<BR>\n" );
document.write( "PROOF:<BR>\n" );
document.write( "7=5*3-8<BR>\n" );
document.write( "7=15-8<BR>\n" );
document.write( "7=7 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );