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Matrices
(Answer ID # 0887688)
Solve each system of equations using Cramer's rule.

1.   -6x - 5y = 106 -3x + 2y = 17	2.   7x - 1y = 59 -2x + 8y = 68	3.   -3x + 4y = 2 -6x - 9y = 123
4.   -6x + 9y + 2z = -95 -5x + 7y - 1z = -58 8x - 3y - 4z = 91	5.   8x - 4y - 9z = 131 3x - 6y + 5z = 4 -2x + 7y - 1z = -28	6.   -5x - 2y + 4z = -7 8x - 3y - 7z = -13 1x - 6y - 9z = -16
7.   1x - 5y = 78 -6x + 3y = -90	8.   -2x + 9y - 8z = -43 -5x - 7y + 4z = -8 -6x + 1y - 9z = -29	9.   -2x + 3y = -42 -8x - 2y = -84
10.   -5x - 4y - 9z = -40 7x - 3y + 1z = 78 -5x + 2y + 7z = 0	11.   -6x - 9y = -3 -3x - 8y = -26	12.   7x - 3y = -102 6x - 8y = -120

 

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