document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1036645>Question 1036645</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello, I was asked this question by my teacher but couldn't get the answer, so she asked me to get the answer and how to get there for next class.<BR>\n" );
document.write( "y = x-12<BR>\n" );
document.write( "y=4x <BR>\n" );
document.write( "She said I could use elimination or substitution. I decided to use elimination. Please help me. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #651362 by </B><A HREF=/tutors/aboutme.mpl?userid=macston><B>macston(5194)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=macston><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=macston><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=651362\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .\r<BR>\n" );
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document.write( "y=x-12<BR>\n" );
document.write( "y=4x  . Subtract this from above equation to eliminate y.<BR>\n" );
document.write( ".<BR>\n" );
document.write( "0=-3x-12 . Add 12 to each side<BR>\n" );
document.write( "12=-3x . Divide each side by -3.<BR>\n" );
document.write( "-4=x<BR>\n" );
document.write( ".<BR>\n" );
document.write( "y=4x=4(-4)=-16<BR>\n" );
document.write( ".<BR>\n" );
document.write( "---OR---<BR>\n" );
document.write( ".<BR>\n" );
document.write( "y=4x<BR>\n" );
document.write( "y/4=x . Use this to substitute for x below<BR>\n" );
document.write( ".<BR>\n" );
document.write( "y=x-12 . Substitute for x from above<BR>\n" );
document.write( "y=(y/4)-12 . Subtract (y/4) from each side<BR>\n" );
document.write( "(4y/4)-(y/4)=-12<BR>\n" );
document.write( "3y/4=-12 . Multiply each side by 4.<BR>\n" );
document.write( "3y=-48 . Divide each side by 3.<BR>\n" );
document.write( "y=-16<BR>\n" );
document.write( ".<BR>\n" );
document.write( "y=4x<BR>\n" );
document.write( "-16=4x<BR>\n" );
document.write( "-4=x<BR>\n" );
document.write( "--------<BR>\n" );
document.write( "ANSWER x=-4 and y=-16<BR>\n" );
document.write( ".<BR>\n" );
document.write( "CHECK:<BR>\n" );
document.write( ".<BR>\n" );
document.write( "y=x-12<BR>\n" );
document.write( "-16=-4-12<BR>\n" );
document.write( "-16=-16<BR>\n" );
document.write( ".<BR>\n" );
document.write( "y=4x<BR>\n" );
document.write( "-16=4(-4)<BR>\n" );
document.write( "-16=-16 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );