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a) Find the determinants of the following matrices: (1 3* A = B = 2 1 - 1 1 3 2 1 1 b)

a) Find the determinants of the following matrices: (1 3* A = B = 2 1 - 1 1 3 2 1 1 b) Which one of these matrices has an inverse matrix? c) Find the inverse of these matrices when it exists. d) Solve the system of equations: 2x + 3y = 5, 2x + 6y = 7 using the Cramer's Rule.

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