document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=107416>Question 107416</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How do I solve by elimination: X-4Y=-23<BR>\n" );
document.write( "                               2X+3Y=9 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #78243 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=78243\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> How do I solve by elimination: <BR>\n" );
document.write( "1st: X-4Y=-23<BR>\n" );
document.write( "2nd: 2X+3Y=9<BR>\n" );
document.write( "---------<BR>\n" );
document.write( "Multiply 1st by 2 to get:<BR>\n" );
document.write( "3rd: 2X-8Y=-46<BR>\n" );
document.write( "---------<BR>\n" );
document.write( "Subtract 2nd from 3rd to solve for \"Y\":<BR>\n" );
document.write( "-11Y = -55<BR>\n" );
document.write( "Y = 5<BR>\n" );
document.write( "---------<BR>\n" );
document.write( "Substitute into X-4Y=-23 to solve for X:<BR>\n" );
document.write( "X-4*5 = -23<BR>\n" );
document.write( "X = -3<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "Checking answer in 2X+3Y=9<BR>\n" );
document.write( "2*-3+3*5 = 9<BR>\n" );
document.write( "-6+15=9<BR>\n" );
document.write( "9=9<BR>\n" );
document.write( "========<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. <BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );