document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=64987>Question 64987</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 21 - y = -87 - 2y </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #45477 by </B><A HREF=/tutors/aboutme.mpl?userid=funmath><B>funmath(2933)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=funmath><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=45477\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The goal is to get y all by itself on one side of the equal sign and all the numbers on the other side.<BR>\n" );
document.write( "We do the inverse to whatever we're trying to get rid of (If it's added, we subtract. If it's subtracted, we add. If it's multiplied, we divide.  If it's divided, we multiply.  <BR>\n" );
document.write( "Whatever we do to one side of the equation, we do to the other.<BR>\n" );
document.write( "21 - y = -87 - 2y<BR>\n" );
document.write( "21-y+2y=-87-2y+2y<BR>\n" );
document.write( "21+y=-87+0<BR>\n" );
document.write( "21+y=-87<BR>\n" );
document.write( "21-21+y=-87-21<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28y=-108%29 ALIGN=MIDDLE  ALT=\"highlight%28y=-108%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "To check your answer, let y=-108 and see if the sides of the equation are equal.<BR>\n" );
document.write( "21-(-108)=-87-2(-108)<BR>\n" );
document.write( "21+108=-87+216<BR>\n" );
document.write( "129=129  We're right!!!<BR>\n" );
document.write( "Happy Calculating!!!! </SPAN>\n" );
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