Question: How should the coefficients a, b, and c be chosen so that the system ax + by + cz = 3, ax-y + cz =

How should the coefficients a, b, and c be chosen so that the system ax + by + cz = 3, ax-y + cz = 1. x + by - cz -2, has the solution x = 1, y = 2 and z = - 1 ?

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