document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1015557>Question 1015557</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 7x-8y=-2\r<BR>\n" );
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document.write( "x-3y= 9     Solving Systems of Equations by Substitution </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #631890 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=631890\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 7x-8y=-2<BR>\n" );
document.write( "x-3y= 9  ; x=9 +3y<BR>\n" );
document.write( "7(9+3y)-8y= -2<BR>\n" );
document.write( "63+21y-8y= -2<BR>\n" );
document.write( "13y= -65<BR>\n" );
document.write( "y=-5<BR>\n" );
document.write( "x=-6, from x=9+3y<BR>\n" );
document.write( "Check by trying in first equation.<BR>\n" );
document.write( "7(-6)-8(-5)=-42+40 = -2 </SPAN>\n" );
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