document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=88462>Question 88462</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve the system by addition\r<BR>\n" );
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document.write( "-3x+7y=2<BR>\n" );
document.write( "  x+2y=-18 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #64311 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=64311\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> -3x+7y=2 now multiply the second equation by 3 & add them<BR>\n" );
document.write( "3x+6y=-54<BR>\n" );
document.write( "------------------------<BR>\n" );
document.write( "13y=-54+2<BR>\n" );
document.write( "13y=-52<BR>\n" );
document.write( "y=-52/13<BR>\n" );
document.write( "y=-4 answer<BR>\n" );
document.write( "-3x+7*-4=2<BR>\n" );
document.write( "-3x-28=2<BR>\n" );
document.write( "-3x=2+28<BR>\n" );
document.write( "-3x=30<BR>\n" );
document.write( "x=30/-3<BR>\n" );
document.write( "x=-10 answer.<BR>\n" );
document.write( "proof<BR>\n" );
document.write( "3*-10+6*-4=-54<BR>\n" );
document.write( "-30-24=-54<BR>\n" );
document.write( "-54=-54 </SPAN>\n" );
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