document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=924942>Question 924942</A>: <I><SPAN STYLE=\"word-break: break-all;\"> x-9y+4z=1 <BR>\n" );
document.write( "-2x+9y-4z=-3 <BR>\n" );
document.write( "2x+y-4z=-3\r<BR>\n" );
document.write( "\n" );
document.write( "What does x, y, and z equal! I need to solve either by substitution or elimination  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #561205 by </B><A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><B>TimothyLamb(4379)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><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=TimothyLamb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=561205\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x - 9y + 4z = 1 <BR>\n" );
document.write( "-2x + 9y - 4z = -3 <BR>\n" );
document.write( "2x + y - 4z = -3<BR>\n" );
document.write( "---<BR>\n" );
document.write( "put the system of linear equations into standard form<BR>\n" );
document.write( "---<BR>\n" );
document.write( "x - 9y + 4z = 1 <BR>\n" );
document.write( "-2x + 9y - 4z = -3 <BR>\n" );
document.write( "2x + y - 4z = -3<BR>\n" );
document.write( "---<BR>\n" );
document.write( "copy and paste the above standard form linear equations in to this solver:<BR>\n" );
document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php<BR>\n" );
document.write( "---<BR>\n" );
document.write( "solution:<BR>\n" );
document.write( "x = 2<BR>\n" );
document.write( "y = 1<BR>\n" );
document.write( "z = 2<BR>\n" );
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document.write( "by elimination:<BR>\n" );
document.write( "---<BR>\n" );
document.write( "x - 9y + 4z = 1 <BR>\n" );
document.write( "-2x + 9y - 4z = -3 <BR>\n" );
document.write( "2x + y - 4z = -3<BR>\n" );
document.write( "---<BR>\n" );
document.write( "add equations 1 and 2:<BR>\n" );
document.write( "---<BR>\n" );
document.write( "x - 9y + 4z = 1 <BR>\n" );
document.write( "-2x + 9y - 4z = -3 <BR>\n" );
document.write( "---<BR>\n" );
document.write( "x + 4z = 1 <BR>\n" );
document.write( "-2x - 4z = -3<BR>\n" );
document.write( "---<BR>\n" );
document.write( "-x = -2<BR>\n" );
document.write( "x = 2<BR>\n" );
document.write( "---<BR>\n" );
document.write( "add equations 2 and 3:<BR>\n" );
document.write( "---<BR>\n" );
document.write( "-2x + 9y - 4z = -3 <BR>\n" );
document.write( "2x + y - 4z = -3<BR>\n" );
document.write( "---<BR>\n" );
document.write( "9y - 4z = -3 <BR>\n" );
document.write( "y - 4z = -3<BR>\n" );
document.write( "---<BR>\n" );
document.write( "10y - 8z = -6 (Equation A)<BR>\n" );
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document.write( "substitute x=2 into equation 1:<BR>\n" );
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document.write( "2 - 9y + 4z = 1 <BR>\n" );
document.write( "-9y + 4z = -1  (Equation B)<BR>\n" );
document.write( "---<BR>\n" );
document.write( "add equations A and 2*B<BR>\n" );
document.write( "---<BR>\n" );
document.write( "10y - 8z = -6<BR>\n" );
document.write( "2(-9y + 4z = -1)<BR>\n" );
document.write( "---<BR>\n" );
document.write( "10y - 8z = -6<BR>\n" );
document.write( "-18y + 8z = -2<BR>\n" );
document.write( "---<BR>\n" );
document.write( "-8y = -8<BR>\n" );
document.write( "y = 1<BR>\n" );
document.write( "---<BR>\n" );
document.write( "substitute x=2 y=1 into equation 1:<BR>\n" );
document.write( "---<BR>\n" );
document.write( "2 - 9 + 4z = 1 <BR>\n" );
document.write( "4z = 8<BR>\n" );
document.write( "z = 2<BR>\n" );
document.write( "---<BR>\n" );
document.write( "answer:<BR>\n" );
document.write( "x = 2<BR>\n" );
document.write( "y = 1<BR>\n" );
document.write( "z = 2<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Solve and graph linear equations:<BR>\n" );
document.write( "https://sooeet.com/math/linear-equation-solver.php<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Solve quadratic equations, quadratic formula:<BR>\n" );
document.write( "https://sooeet.com/math/quadratic-formula-solver.php<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Solve systems of linear equations up to 6-equations 6-variables:<BR>\n" );
document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );