document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=324886>Question 324886</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 5x-3y+7=11<BR>\n" );
document.write( "3x+y-2z=11<BR>\n" );
document.write( "-x+2y+z=11<BR>\n" );
document.write( "Using the matrix method,which row of operations can i use to solve this problem? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #232672 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=232672\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You could find the inverse of the coefficient matrix or you could use Gaussian elimination. <BR>\n" );
document.write( "I'll use matrix inversion in EXCEL (MINVERSE function).<BR>\n" );
document.write( "[A]=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28matrix%283%2C3%2C5%2C-3%2C7%2C3%2C1%2C-2%2C-1%2C2%2C1%29%29 ALIGN=MIDDLE  ALT=\"%28matrix%283%2C3%2C5%2C-3%2C7%2C3%2C1%2C-2%2C-1%2C2%2C1%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "[x]=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28matrix%283%2C1%2Cx%2Cy%2Cz%29%29 ALIGN=MIDDLE  ALT=\"%28matrix%283%2C1%2Cx%2Cy%2Cz%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "[b]=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28matrix%283%2C1%2C11%2C11%2C11%29%29 ALIGN=MIDDLE  ALT=\"%28matrix%283%2C1%2C11%2C11%2C11%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Find the inverse of [A].<BR>\n" );
document.write( "[A][x]=[b]<BR>\n" );
document.write( "[x]=[A]inv[b]<BR>\n" );
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document.write( "det([A])=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=77 ALIGN=MIDDLE  ALT=\"77\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ".<BR>\n" );
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document.write( "[A]inv=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%281%2F77%29%2A%28matrix%283%2C3%2C5%2C17%2C-1%2C-1%2C12%2C31%2C7%2C-7%2C14%29%29 ALIGN=MIDDLE  ALT=\"%281%2F77%29%2A%28matrix%283%2C3%2C5%2C17%2C-1%2C-1%2C12%2C31%2C7%2C-7%2C14%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28matrix%283%2C1%2Cx%2Cy%2Cz%29%29=%28matrix%283%2C1%2C3%2C6%2C2%29%29 ALIGN=MIDDLE  ALT=\"%28matrix%283%2C1%2Cx%2Cy%2Cz%29%29=%28matrix%283%2C1%2C3%2C6%2C2%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );