document.write( "Question 46526This question is from textbook Finite Mathematics
\n" ); document.write( ": The following matrix is obtained from a system of equations
\n" ); document.write( "1 0 6 5
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\n" ); document.write( "0 0 2 -6 The solution to the system is\r
\n" ); document.write( "\n" ); document.write( "My answer is no solution after using Excel. thanks for looking at this problem. \n" ); document.write( "
Algebra.Com's Answer #30825 by AnlytcPhil(1807)\"\" \"About 
You can put this solution on YOUR website!
The following matrix is obtained from a system of \r\n" );
document.write( "equations\r\n" );
document.write( "1 0  6  5\r\n" );
document.write( "0 1 -4  3\r\n" );
document.write( "0 0  2 -6 The solution to the system is \r\n" );
document.write( "My answer is no solution after using Excel. \r\n" );
document.write( "thanks for looking at this problem.\r\n" );
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document.write( "No, there is a solution. \r\n" );
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document.write( "[1 0  6  5]\r\n" );
document.write( "[0 1 -4  3]\r\n" );
document.write( "[0 0  2 -6]\r\n" );
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document.write( "is the matrix for the system\r\n" );
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document.write( "1x + 0y + 6z =  5\r\n" );
document.write( "0x + 1y - 4z =  3\r\n" );
document.write( "0x + 0y + 2z = -6 \r\n" );
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document.write( "or\r\n" );
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document.write( " x      + 6z =  5\r\n" );
document.write( "      y - 4z =  3\r\n" );
document.write( "          2z = -6 \r\n" );
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document.write( "Solve the bottom equation for z\r\n" );
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document.write( "          2z = -6\r\n" );
document.write( "           z = -3\r\n" );
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document.write( "Substitute -3 for z in the middle equation\r\n" );
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document.write( "      y - 4z = 3\r\n" );
document.write( "   y - 4(-3) = 3 \r\n" );
document.write( "      y + 12 = 3\r\n" );
document.write( "           y = -9\r\n" );
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document.write( "Substitute in the first equation:\r\n" );
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document.write( "      x + 6z =  5\r\n" );
document.write( "   x + 6(-3) = 5\r\n" );
document.write( "      x - 18 = 5\r\n" );
document.write( "           x = 23\r\n" );
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document.write( "The solution is (x, y, z) = (23, -9, -3) \r\n" );
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document.write( "Edwin
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