Question: Determine by matrix multiplication whether or not A is the proper matrix of solution values. 3x + y + 2z = 1 x - 3y
Determine by matrix multiplication whether or not A is the proper matrix of solution values.

3x + y + 2z = 1 x - 3y + 4z = -3 A = 2x + 2y + z = 1 2 1
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