document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=713608>Question 713608</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve each system using elimination. \r<BR>\n" );
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document.write( "3x+6y=42<BR>\n" );
document.write( "-7x+8y= -109 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #438511 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley79><B>checkley79(3341)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley79><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=438511\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 3x+6y=42 multiply by 4<BR>\n" );
document.write( "-7x+8y=-109 multiply by -3 & add.<BR>\n" );
document.write( "12x+24y=168<BR>\n" );
document.write( "21x-24y=327<BR>\n" );
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document.write( "33x=495<BR>\n" );
document.write( "x=495/33<BR>\n" );
document.write( "x=15 ans.<BR>\n" );
document.write( "3*15+6y=42<BR>\n" );
document.write( "45+6y=42<BR>\n" );
document.write( "6y=42-45<BR>\n" );
document.write( "6y=-3<BR>\n" );
document.write( "y=-3/6<BR>\n" );
document.write( "y=-.5 ans.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( "-7*15+8(-.5)=-109<BR>\n" );
document.write( "-105-4=-109<BR>\n" );
document.write( "-109=-109<BR>\n" );
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