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For adding matrices, their dimension should be equal.

First write the dimension of the matrix.

The first matrix is $\"\"$

The matrix has 2 row and 2 columns, so dimensions of matrix are $\"\"$ .

The second matrix is $\"\"$

The matrix has 2 row and 2 columns, so dimensions of matrix are $\"\"$ .

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The dimensions of matrix are equal. The operation of subtraction is possible.

Subtract the corresponding elements. \ \

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The solution is $\"\"$