document.write( "Question 168729: Suppose you want to use Cramer's rule to find the value of z in the following system.. write the determinants you would need to evaluate. \r
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Algebra.Com's Answer #124404 by Edwin McCravy(20063) $\"\"$ $\"About$

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Suppose you want to use Cramer's rule to find the value of z in the following system.. write the determinants you would need to evaluate. \r
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document.write( "You just asked for z, but I'll give you the determinant for all \r\n" );
document.write( "three unknowns:\r\n" );
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document.write( "The only answer you want is this last one:\r\n" );
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document.write( "Notice that the denominators are all the same and they are made\r\n" );
document.write( "from the coefficients of the unknowns.  Notice that each numerator\r\n" );
document.write( "determinant is just like the denominator except for \r\n" );
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document.write( "the 1st column of the 1st unknown x,\r\n" );
document.write( "the 2nd column of the 2nd unknown y, and \r\n" );
document.write( "the 3rd column of the 3rd unknown z.  \r\n" );
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document.write( "What replaces these is the column of constants  on the right of \r\n" );
document.write( "the equal signs, which does not appear in the denominator.\r\n" );
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document.write( "Edwin

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