document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=234679>Question 234679</A>: <I><SPAN STYLE=\"word-break: break-all;\"> find the solution to problem by using system of equations by substitution.\r<BR>\n" );
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document.write( "y=2x+7<BR>\n" );
document.write( "y=-x-5 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #173070 by </B><A HREF=/tutors/aboutme.mpl?userid=rfer><B>rfer(16322)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rfer><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=173070\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> y=2x+7<BR>\n" );
document.write( "y=-x-5<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "-x-5=2x+7<BR>\n" );
document.write( "3x=-12<BR>\n" );
document.write( "x=-4<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "y=2(-4)+7<BR>\n" );
document.write( "y=-8+7<BR>\n" );
document.write( "y=-1<BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "-1=4-5 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );