document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=71977>Question 71977</A>: <I><SPAN STYLE=\"word-break: break-all;\"> x+3y=12<BR>\n" );
document.write( "2x-4y=24<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #51501 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley75><B>checkley75(3666)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley75><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=51501\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x+3y=12, x=-3y+12 now substitute (-3y+12) for x and solve for y<BR>\n" );
document.write( "2(-3y+12)-4y=24<BR>\n" );
document.write( "-6y+24-4y=24<BR>\n" );
document.write( "-10y=24-24<BR>\n" );
document.write( "-10y=0<BR>\n" );
document.write( "y=0 answer. now replace y by 0 and solve for x<BR>\n" );
document.write( "x+3*y=12<BR>\n" );
document.write( "x+0=12<BR>\n" );
document.write( "x=12 answer.<BR>\n" );
document.write( "proof<BR>\n" );
document.write( "2*12-4*0=24<BR>\n" );
document.write( "24=24\r<BR>\n" );
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