Question: please help Question 12 Solve using matrices: 32 + y = -7 x- y = -5 Upload Choose a File Question 13 Solve the system:

please help

Question 12 Solve using matrices: 32 + y = -7 x- y = -5 Upload Choose a File Question 13 Solve the system: x+ 2y - 2z = -2 5x + 9y - 4z = -3 3x + 4y - 5z = -3

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