document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=419430>Question 419430</A>: <I><SPAN STYLE=\"word-break: break-all;\"> what is the best method to solve 4x+8y=20<BR>\n" );
document.write( "                                 -4x+2y=-30 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #293319 by </B><A HREF=/tutors/aboutme.mpl?userid=Gogonati><B>Gogonati(855)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Gogonati><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/cgi-bin/show-face.mpl?user=Gogonati><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=293319\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The best method to solve this system linear equations is adding  both sides:\r<BR>\n" );
document.write( "\n" );
document.write( "      4x+8y=20<BR>\n" );
document.write( "     -4x+2y=-30\r<BR>\n" );
document.write( "\n" );
document.write( "      10y=-10<BR>\n" );
document.write( "        y=-1<BR>\n" );
document.write( "Substitute y=-1 in the first equation 4x+8(-1)=20 ,solving this equation we find x=7 The ordered pair (7,-1) is the solution for our system. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );