document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=639888>Question 639888</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If 2x+y=8 and x-y=1,then y= </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #402915 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=402915\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If 2x+y=8 and x-y=1,then y=<BR>\n" );
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document.write( "2x+y=8 (equation 1)<BR>\n" );
document.write( "x-y=1  (equation 2)<BR>\n" );
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document.write( "Solve equation 2 for x:<BR>\n" );
document.write( "x-y=1<BR>\n" );
document.write( "x=y+1<BR>\n" );
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document.write( "Substitute above into equation 1 and solve for y:<BR>\n" );
document.write( "2x+y=8<BR>\n" );
document.write( "2(y+1)+y=8<BR>\n" );
document.write( "2y+2+y=8<BR>\n" );
document.write( "3y+2=8<BR>\n" );
document.write( "3y=6<BR>\n" );
document.write( "y = 2<BR>\n" );
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