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Question

Suppose that \(\begin{bmatrix} 1 & 2 \\ 4 & 3\end{bmatrix}^\mathsf{T} +\begin{bmatrix} -1 & 0\\ 2 & -2\end{bmatrix}= \begin{bmatrix} 0 & a \\ b & 1\end{bmatrix}\).

What is \(a - b\)?