document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=697758>Question 697758</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need help with solving systems of equations by elimination.<BR>\n" );
document.write( "-6x+6y=6<BR>\n" );
document.write( "-6x+3y=-12<BR>\n" );
document.write( "how do I solve it ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #430646 by </B><A HREF=/tutors/aboutme.mpl?userid=Simnepi><B>Simnepi(216)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Simnepi><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/cgi-bin/show-face.mpl?user=Simnepi><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=430646\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> you have to get rid of one of the unknowns by adding or subtracting the equations.<BR>\n" );
document.write( "since the signs of the two equal unknowns are the Same .... Subtract the equations. (If the signs were Different ... aDd the equations)<BR>\n" );
document.write( "Subtracting left hand and right hand sides gives<BR>\n" );
document.write( "-6x+6y-(-6x+3y) = 6-(-12) removing brackets and simplifying<BR>\n" );
document.write( "3y = 18<BR>\n" );
document.write( "y = 6<BR>\n" );
document.write( "substitute this value into either of the equations<BR>\n" );
document.write( "-6x+36 = 6<BR>\n" );
document.write( "-6x = -30<BR>\n" );
document.write( "x = 5<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );