document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=789421>Question 789421</A>: <I><SPAN STYLE=\"word-break: break-all;\"> ||2x+1|-18|=4 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #485380 by </B><A HREF=/tutors/aboutme.mpl?userid=tommyt3rd><B>tommyt3rd(5050)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=tommyt3rd><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=tommyt3rd><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=485380\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The easiest way to solve any absolute value problem is to determine all possible equations with respect to the signs of the expressions. This equation has 4 possibilities:\r<BR>\n" );
document.write( "\n" );
document.write( "case 1)<BR>\n" );
document.write( "2x+1-18=4  <BR>\n" );
document.write( "2x=21<BR>\n" );
document.write( "x=21/2\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "case 2)<BR>\n" );
document.write( "-2x-1-18=4<BR>\n" );
document.write( "-2x=23<BR>\n" );
document.write( "x=-23/2\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "case 3)<BR>\n" );
document.write( "2x+1-18=-4<BR>\n" );
document.write( "2x=13<BR>\n" );
document.write( "x=13/2\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "case 4)<BR>\n" );
document.write( "-2x-1 -18=-4<BR>\n" );
document.write( "-2x=15<BR>\n" );
document.write( "x=-15/2 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );