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If \(A = \begin{bmatrix}
8 & 5\\
2 & 7
\end{bmatrix}\), and \(A + B = \begin{bmatrix}
13 & 10\\
6& -4
\end{bmatrix}\) find the matrix \(B\).
8 & 5\\
2 & 7
\end{bmatrix}\), and \(A + B = \begin{bmatrix}
13 & 10\\
6& -4
\end{bmatrix}\) find the matrix \(B\).
\(B =\)_____
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