document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=331756>Question 331756</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please show me how to use substitution to solve the system of equations;<BR>\n" );
document.write( "5x+5y=-30 and 2x-y=15. Thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #237818 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=237818\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 5x+5y=-30 <BR>\n" );
document.write( "divide by 5<BR>\n" );
document.write( "x+y=-6<BR>\n" );
document.write( "y= -6-x<BR>\n" );
document.write( "..<BR>\n" );
document.write( "and 2x-y=15<BR>\n" );
document.write( "plug the value of y in the equation<BR>\n" );
document.write( "2x-(-6-x)=15<BR>\n" );
document.write( "2x+6+x=15<BR>\n" );
document.write( "3x+6=15<BR>\n" );
document.write( "3x=15-6<BR>\n" );
document.write( "3x=9<BR>\n" );
document.write( "x=3<BR>\n" );
document.write( "..<BR>\n" );
document.write( "plug value of x in the equation x+y=-6<BR>\n" );
document.write( "3+y=-6<BR>\n" );
document.write( "y=-6-3<BR>\n" );
document.write( "y=-9<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );