document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1097959>Question 1097959</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve the system using substitution.\r<BR>\n" );
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document.write( "3x + 4y &#8722; z = 14<BR>\n" );
document.write( "x &#8722; 5y + 2z = 26<BR>\n" );
document.write( "5x + y &#8722; 2z = 40\r<BR>\n" );
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document.write( "The solution to the system of three linear equations is the ordered triple____. <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #712357 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=712357\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Solve the system using substitution.\r<BR>\n" );
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document.write( "3x + 4y - z = 14 times 2 --> 6x + 8y - 2z = 28<BR>\n" );
document.write( "x  - 5y + 2z = 26<BR>\n" );
document.write( "5x + y  - 2z = 40<BR>\n" );
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document.write( "6x + 8y - 2z = 28 --> 2z = 6x + 8y - 28<BR>\n" );
document.write( "x  - 5y + 2z = 26<BR>\n" );
document.write( "5x + y  - 2z = 40<BR>\n" );
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document.write( "Sub for 2z in Eqns 2 & 3<BR>\n" );
document.write( "x  - 5y + 2z = 26<BR>\n" );
document.write( "x  - 5y + 6x + 8y - 28 = 26<BR>\n" );
document.write( "7x + 3y = 54 --- Eqn A<BR>\n" );
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document.write( "5x + y  - 2z = 40<BR>\n" );
document.write( "5x + y - (6x + 8y - 28) = 40<BR>\n" );
document.write( "-x - 7y = 12 --- Eqn B<BR>\n" );
document.write( "-7x - 49y = 84 --- Eqn B times 7<BR>\n" );
document.write( "7x - y = 54 --- Eqn A<BR>\n" );
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document.write( "-50y = 138<BR>\n" );
document.write( "y = -69/25<BR>\n" );
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document.write( "Sub for y in Eqn A or B, find x<BR>\n" );
document.write( "Sub for x & y in any equation, find z<BR>\n" );
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document.write( "Don't solve for x, y or z and deal with fractions.<BR>\n" );
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document.write( "check the work carefully.<BR>\n" );
document.write( "It's easy to make a mistake, and it's late and I'm tired.\r<BR>\n" );
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