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Matrices
(Answer ID # 0661675)
Write the augmented matrix for the linear system and then solve.

1.   9x + 1y = 38 -5x - 4y = 3	2.   3x - 7y + 2z = 42 -2x - 3y - 7z = 132 -4x + 5y + 9z = -144
3.   8x + 1y - 6z = -35 -9x + 7y - 8z = 164 5x - 3y + 4z = -88	4.   -2x - 1y = -18 -7x + 3y = -128
5.   -2x - 5y = -5 8x - 9y = -67	6.   1x - 6y - 4z = 70 -8x + 3y - 1z = -95 -2x + 5y - 6z = 21
7.   7x + 4y = -110 -9x + 5y = 40	8.   -8x + 3y - 6z = 4 -7x - 1y - 2z = 13 5x + 9y - 6z = -31
9.   -4x - 1y - 2z = -47 -3x + 8y + 7z = -72 -5x + 8y - 2z = -157	10.   1x + 9y - 7z = 39 -6x + 4y - 3z = 74 -2x + 7y - 6z = 62
11.   -4x - 8y = 80 9x - 5y = 73	12.   -6x + 7y = 162 -3x - 1y = 27

 

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