document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=314453>Question 314453</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The sum of two numbers is -6 and their difference is 18. Write a pair of simultaneous equations and solve them to find the two numbers. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #224820 by </B><A HREF=/tutors/aboutme.mpl?userid=texttutoring><B>texttutoring(324)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=texttutoring><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=texttutoring><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=224820\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Equation 1: x+y=-6<BR>\n" );
document.write( "Equation 2: x-y=18\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Rearrange Equation 2 to isolate for x:\r<BR>\n" );
document.write( "\n" );
document.write( "x=18+y\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Now plug this value into Equation 1:\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "18+y + y = -6<BR>\n" );
document.write( "18+2y=-6<BR>\n" );
document.write( "2y=-24<BR>\n" );
document.write( "y=-12\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Now plug this value of y into Equation 2 to find x:\r<BR>\n" );
document.write( "\n" );
document.write( "x=18+y<BR>\n" );
document.write( "x=18-12<BR>\n" );
document.write( "x=6\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "The two numbers are 6 and -12. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );