2x - 3y + 4z = 23 x + 2y - 4z = - 10 3x - y + 2z = 19 2 - 3 4 1 2 - 4 3 - 1 2 Correct: Your answer is correct. x y z = 23 - 10 19 Find A-1. 0 1/7 2/7 - 1 - 4/7 6/7 - 1/2 - 1/2 1/2 Correct: Your answer is correct. Use the result to solve the system. (x, y, z) =
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