$\"\"$

Given matrices are $\"\"$ .

First apply scalar multiplication operation is done by multiplying each element of the first matrix by scalar, 2.

$\"\"$

$\"\"$ (Product of two different signs is negative)

The above two matrices are have the same dimensions, $\"\"$ they can be added together.Add matrices by adding the corresponding elements of the matrices.

$\"\"$ \ \

Product of two different signs is negative and Product of two same signs is positive.

$\"\"$

$\"\"$ $\"\"$

The value of $\"\"$ is $\"\"$ .