could someone please help me solve this equations using Cramer's rule for three variables? I am just not getting past the point of transforming them into the three different matices.
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document.write( "x-2y=17\r\n" );
document.write( "2y+z=10\r\n" );
document.write( "-x+z=-2\r\n" );
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document.write( "Put in +0 times every missing letter:\r\n" );
document.write( "Put in understood 1 coefficients:\r\n" );
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document.write( " 1x - 2y + 0z = 17\r\n" );
document.write( " 0x + 2y + 1z = 10\r\n" );
document.write( "-1x + 0y + 1z = -2\r\n" );
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document.write( "You must memorize this:\r\n" );
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document.write( "This system:\r\n" );
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document.write( "has this solution:\r\n" );
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document.write( "
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document.write( "The 3 denominators are all the same. They are the\r\n" );
document.write( "coefficients of the unknowns in the same configuration\r\n" );
document.write( "as they are in the original equations.\r\n" );
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document.write( "The column of constants is the column of numbers right of\r\n" );
document.write( "the equal signs, namely this: 
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document.write( "The numerator for the FIRST unknown, x, is like its denominator\r\n" );
document.write( "except that the FIRST column 
.is replaced by .\r\n" );
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document.write( "The numerator for the SECOND unknown, y, is like its denominator\r\n" );
document.write( "except that the SECOND column 
.is replaced by .\r\n" );
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document.write( "The numerator for the THIRD unknown, x, is like its denominator\r\n" );
document.write( "except that the THIRD column 
.is replaced by .\r\n" );
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document.write( "-----\r\n" );
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document.write( "This system:\r\n" );
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document.write( " 
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document.write( " 
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document.write( " 
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document.write( "has this solution:\r\n" );
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document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "The 3 denominators are all the same. They are the\r\n" );
document.write( "coefficients of the unknowns in the same configuration\r\n" );
document.write( "as they are in the original equations.\r\n" );
document.write( "\r\n" );
document.write( "The column of constants is the column of numbers right of\r\n" );
document.write( "the equal signs, namely this: 
.\r\n" );
document.write( "\r\n" );
document.write( "The numerator for the FIRST unknown, x, is like its denominator\r\n" );
document.write( "except that the FIRST column 
.is replaced by .\r\n" );
document.write( "\r\n" );
document.write( "The numerator for the SECOND unknown, y, is like its denominator\r\n" );
document.write( "except that the SECOND column 
.is replaced by .\r\n" );
document.write( "\r\n" );
document.write( "The numerator for the THIRD unknown, z, is like its denominator\r\n" );
document.write( "except that the THIRD column 
.is replaced by .\r\n" );
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document.write( "Do you know how to evaluate the determinants? If not\r\n" );
document.write( "post again asking how:\r\n" );
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document.write( "Edwin
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