document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=199254>Question 199254</A>: <I><SPAN STYLE=\"word-break: break-all;\"> {2x + y=7<BR>\n" );
document.write( "{-5 - 2y=8 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #149767 by </B><A HREF=/tutors/aboutme.mpl?userid=tutorvolunteer><B>tutorvolunteer(9)</B></A><img src=\"/images/stars/stars-05.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=tutorvolunteer><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=149767\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This is a system of equations. There are many methods for solving this, i.e. substitution, plugging in.\r<BR>\n" );
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document.write( "I will solve this by plugging in Y to get X.\r<BR>\n" );
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document.write( "2x + y = 7, so  y = 7-2x\r<BR>\n" );
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document.write( "Also, since -5-2y = 8, we can plug in y=7-2x, and get:\r<BR>\n" );
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document.write( "-5-2(7-2x) = 8\r<BR>\n" );
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document.write( "We distribute -2, so we get: -5 -14 + 4x = 8.\r<BR>\n" );
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document.write( "Simplifying this, we get: x=6.75 \r<BR>\n" );
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document.write( "Plug this into y = 7 - 2x, and we get: y = - 6.5 </SPAN>\n" );
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