document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=169488>Question 169488</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve each system by addition:\r<BR>\n" );
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document.write( "x+y=7<BR>\n" );
document.write( "x-y=9 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #124938 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=124938\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x+y=7<BR>\n" );
document.write( "x-y=9<BR>\n" );
document.write( "-----------<BR>\n" );
document.write( "2x=16<BR>\n" );
document.write( "x=16/2<BR>\n" );
document.write( "x=8 ans.<BR>\n" );
document.write( "8+y=7<BR>\n" );
document.write( "y=7-8<BR>\n" );
document.write( "y=-1 ans.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( "8-(-1)=9<BR>\n" );
document.write( "8+1=9<BR>\n" );
document.write( "9=9 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );