document.write( "Question 989830: 2x+4y+3z=10
\n" ); document.write( "3x - y + 6z = 15
\n" ); document.write( "5x + 2y - z = 25
\n" ); document.write( " three equation three unknown
\n" ); document.write( "what is x, y, and z? \n" ); document.write( "

Algebra.Com's Answer #610059 by Boreal(15235) $\"\"$ $\"About$

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2x+4y+3z=10
\n" ); document.write( "3x - y + 6z = 15
\n" ); document.write( "5x + 2y - z = 25
\n" ); document.write( "Cramer's Rule
\n" ); document.write( "Make Matrix by 2nd Matrix, scroll to edit and hit 3 enter 3 enter.
\n" ); document.write( "Input the data
\n" ); document.write( "go to quit.
\n" ); document.write( "Go to matrix, then math, and 1 det. Go back to matrix and select the matrix and enter it.
\n" ); document.write( "Hit enter.\r
\n" ); document.write( "\n" ); document.write( "The determinant for the denominator is
\n" ); document.write( "2 4 3
\n" ); document.write( "3-1 6
\n" ); document.write( "5 2 -1
\n" ); document.write( "That equals 143\r
\n" ); document.write( "\n" ); document.write( "Dx
\n" ); document.write( "10 4 3
\n" ); document.write( "15 -1 6
\n" ); document.write( "25 2 -1
\n" ); document.write( "That equals 715, and 715/143=5 for x.\r
\n" ); document.write( "\n" ); document.write( "Dy
\n" ); document.write( "2 10 3
\n" ); document.write( "3 15 6
\n" ); document.write( "5 25 -1
\n" ); document.write( "That is 0.\r
\n" ); document.write( "\n" ); document.write( "Dz
\n" ); document.write( "2 4 10
\n" ); document.write( "3 -1 15
\n" ); document.write( "5 2 25
\n" ); document.write( "That is also 0.
\n" ); document.write( "(5,0,0)
\n" ); document.write( "Works in the first, second and third. \n" ); document.write( "

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