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Matrices
(Answer ID # 1044487)
Use an inverse matrix to solve the linear system.

1.   -2x + 9y = -98 6x - 1y = -70	2.   3x - 7y = 62 -8x + 5y = 26
3.   3x - 6y = 45 9x - 5y = -8	4.   -1x - 8y = -69 2x - 7y = -92
5.   -1x + 7y = 108 -2x - 9y = -106	6.   -5x + 8y = 86 3x - 4y = -50
7.   -1x - 2y = -1 -3x + 7y = 49	8.   -9x + 6y = 126 -5x - 8y = -32
9.   4x + 1y = -13 -6x - 5y = 37	10.   3x - 2y = -31 9x - 8y = -103
11.   5x - 4y = 96 8x - 9y = 177	12.   -1x - 7y = 88 3x - 2y = -11

 

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