document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=314763>Question 314763</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve this system of equations by the substitution method.<BR>\n" );
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document.write( "x+4x=-1<BR>\n" );
document.write( "3x+y=8 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #225113 by </B><A HREF=/tutors/aboutme.mpl?userid=Jstrasner><B>Jstrasner(112)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Jstrasner><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=Jstrasner><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=225113\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hey,\r<BR>\n" );
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document.write( "So for this one, we simply solve the first one:\r<BR>\n" );
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document.write( "x+4x=-1 => 5x=-1 => x=-1/5\r<BR>\n" );
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document.write( "then we substitute this into the next equation:\r<BR>\n" );
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document.write( "3(-1/5) + y = 8\r<BR>\n" );
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document.write( "And solve for this one:\r<BR>\n" );
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document.write( "-3/5 + y = 8   =>  y= 43/5\r<BR>\n" );
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document.write( "I hope this helps! </SPAN>\n" );
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