document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=106658>Question 106658</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve the system by addition\r<BR>\n" );
document.write( "\n" );
document.write( "-3x+4y=-6 <BR>\n" );
document.write( "x-2y=12 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #77615 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=77615\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Solve the system by addition <BR>\n" );
document.write( "1st: -3x+4y=-6 <BR>\n" );
document.write( "2nd: x-2y=12<BR>\n" );
document.write( "----------<BR>\n" );
document.write( "Multiply 2nd by 3 to get:<BR>\n" );
document.write( "3rd: 3x-6y=36<BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "Add 1st and 3rd to get:<BR>\n" );
document.write( "-2y= 30<BR>\n" );
document.write( "y=-15<BR>\n" );
document.write( "Substitute into x-2y=12 to solve for x:<BR>\n" );
document.write( "x-2*-15 = 12<BR>\n" );
document.write( "x+30=12<BR>\n" );
document.write( "x = -18<BR>\n" );
document.write( "==========<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );