$\"\"$

The matrix operation is $\"\"$ .

$\"\"$ (Original matrix)

$\"\"$ (Distributive the scalar: $\"\"$ )

$\"\"$ (Add and subtract: $\"\"$ )

$\"\"$ (Commutative property of addition: $\"\"$ )

$\"\"$ (Simplify)

Therefore, the simplified matrix is $\"\"$ . $\"\"$

The result of operation is $\"\"$ .