$\"\"$

For subtracting matrices, their dimension should be equal.

First write the dimension of the matrix.

The dimensions of matrix A and B are $\"\"$ .

The operation (3C – 4A + B) is possible. $\"\"$

Multiply the matrix C by 3.

$\"\"$

$\"\"$ (Multiply each element by 3)

$\"\"$ (Simplify) $\"\"$

Multiply the matrix A by 4.

$\"\"$

$\"\"$ (Multiply each element by 4)

$\"\"$ (Simplify) $\"\"$

Perform the operation 3C – 4A + B.

$\"\"$

$\"\"$ (Add and subtract corresponding elements)

$\"\"$ (Simplify) $\"\"$

(3C – 4A + B) $\"\"$ .