document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=185375>Question 185375</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello my name is Aaliyah and I really need help on this problem.<BR>\n" );
document.write( "2x-5y=-158<BR>\n" );
document.write( "x-y=-40<BR>\n" );
document.write( "But it will not show me how to do it or anything and really need it, because i am a 7th grader and i am really smart but just do not get this problem at all, and my math class is all 9th graders, only me and three other 7th grade girls are in this honorable class. So please help. Thankyou very much!!!!!!!!!!!!!!! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #139072 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=139072\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Given:<BR>\n" );
document.write( "2x-5y = -158<BR>\n" );
document.write( " x- y = -40<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Using the \"addition method\", we start by multiplying the second equation by -5:<BR>\n" );
document.write( "2x-5y = -158<BR>\n" );
document.write( "-5(x- y) = -5(-40)<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Giving us:<BR>\n" );
document.write( " 2x-5y = -158<BR>\n" );
document.write( "-5x+5y = 200<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Now we ADD the two equation together:<BR>\n" );
document.write( " 2x-5y = -158<BR>\n" );
document.write( "-5x+5y = 200<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "-3x    = 42<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Finally, we divide both sides by -3:<BR>\n" );
document.write( "-3x    = 42<BR>\n" );
document.write( "x    = -14<BR>\n" );
document.write( ".<BR>\n" );
document.write( "To find y, we plug the above into either equation -- I'll use:<BR>\n" );
document.write( " x- y = -40<BR>\n" );
document.write( " -14- y = -40<BR>\n" );
document.write( "-y = -26<BR>\n" );
document.write( "y = 26<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Solution: (x,y) = (-14, 26)\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );