document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1122869>Question 1122869</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Subscript notation is frequently used for working with larger systems of equations. Use a matrix approach to solve the system. Express the solutions as 4-tuples of the form <BR>\n" );
document.write( "(x1, x2, x3, x4).<BR>\n" );
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document.write( "x1 + 3x2 &#8722; x3 + 2x4	 = 	&#8722;9<BR>\n" );
document.write( "2x1 + 7x2 + 2x3 &#8722; x4	 = 	44<BR>\n" );
document.write( "&#8722;3x1 &#8722; 8x2 + 3x3 + x4	 = 	&#8722;7<BR>\n" );
document.write( "4x1 + 11x2 &#8722; 2x3 &#8722; 3x4	 = 	36\r<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 #739050 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52794)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=739050\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .\r<BR>\n" );
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document.write( "I just answered similar question today under the link\r<BR>\n" );
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document.write( "<A  rel=nofollow HREF=https://www.algebra.com/algebra/homework/equations/Equations.faq.question.1122833.html>https://www.algebra.com/algebra/homework/equations/Equations.faq.question.1122833.html</A>\r<BR>\n" );
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document.write( "https://www.algebra.com/algebra/homework/equations/Equations.faq.question.1122833.html\r<BR>\n" );
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document.write( "Go to the site  https://matrix.reshish.com/gauss-jordanElimination.php .\r<BR>\n" );
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document.write( "Find there free of charge online solver for matrix equations.\r<BR>\n" );
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document.write( "Input your extended matrix into the solver.\r<BR>\n" );
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document.write( "Then press the \"Solve\" button.\r<BR>\n" );
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document.write( "You will get the solution.\r<BR>\n" );
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