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 #631891 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=631891\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 7x-8y=-2 <BR>\n" );
document.write( "x-3y= 9 <BR>\n" );
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document.write( "Solve the 2nd equation for \"x\"::<BR>\n" );
document.write( "x = 3y+9<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Substitute for \"x\" and solve for \"y\":<BR>\n" );
document.write( "7(3y+9) - 8y = -2<BR>\n" );
document.write( "21y + 63 - 8y = -2<BR>\n" );
document.write( "13y = -65<BR>\n" );
document.write( "y = -5<BR>\n" );
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document.write( "Solve for \"x\"::<BR>\n" );
document.write( "x = 3y + 9<BR>\n" );
document.write( "x = 3*-5+9<BR>\n" );
document.write( "x = -15+9<BR>\n" );
document.write( "x = -6<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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