41-56 - Cramer's Rule Use Cramer's Rule to solve the system. S2r - y = -9 S6x + 12y = 33 42. 41. lx+ 2y = 8 4x + 7y = 20 x - 6y = 3 Stx + ty = 1 43. 3x + 2y = 1 44. I4x - dy = - S0.4x + 1.2y = 0.4 45. (10x – 17y = 21 46. 1.2r + 1.6y = 3.2 20x - 3ly = 39 x- y + 2: = 0 5x - 3y + z = 6. 4y - 6z = = -13 47. 3x + : = 11 48. 22 -x + 2y = 0 7x + 10y 2x, + 3x2 - Sx, =1 -2a + c = 2 49. X, + X - X = 2 50. a + 2b - c = 9 2r, + x, = 8 3a + 5b + 2c = 22 fx – ty + }z = i% 51. {-ix + iy + : = # x - ty + z= 2x - y = 5 52. 5x + 3z = 19 4y + 7z = 17 3y + 5z = 4 2r 5y - = 4 53. 2x - z= 10 54. x + y - : = 8 3r 4x + 7y = 0 + 5z = 0 x +y + : + w = 0 x+ y = 1 2r + w = 0 y +z = 2 55. 56. y - 2 + 2z = 0 z + w = 3 = 1 w - x= 4

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