document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=140701>Question 140701</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What are the steps to solving the system  <BR>\n" );
document.write( "x^2+y^2=169<BR>\n" );
document.write( "    x-y=7<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #102409 by </B><A HREF=/tutors/aboutme.mpl?userid=jojo14344><B>jojo14344(1513)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jojo14344><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=102409\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Okay, x^2+y^2=169, mark this equation 1.<BR>\n" );
document.write( "Also, x-y=7, mark this then equation 2.<BR>\n" );
document.write( "In equation 2 we get, y=x-7, right? Substitute this y value in equation 1,<BR>\n" );
document.write( "Therefore,<BR>\n" );
document.write( "x^2+(x-7)^2=169<BR>\n" );
document.write( "x^2+x^2-14x+49=169<BR>\n" );
document.write( "2x^2-14x-120=0<BR>\n" );
document.write( "(2x+10)(x-12)=0<BR>\n" );
document.write( "It has 2 values, first<BR>\n" );
document.write( "x=-10/2=-5, <BR>\n" );
document.write( "For y, go back equation 2, so y =-5-7=-12<BR>\n" );
document.write( "This equation has (-5,-12)<BR>\n" );
document.write( "Also the other value x=12, and y=12-7=5<BR>\n" );
document.write( "For this equation has (12,5)<BR>\n" );
document.write( "Thank you,<BR>\n" );
document.write( "jojo </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );