$\"\"$

\

For subtracting matrices, their dimension should be equal.

\

First write the dimension of the matrix.

\

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

\

The operation $\"\"$ 4C $\"\"$ 5B is possible. $\"\"$

\

Multiply the matrix C by $\"\"$ 4.

\

$\"\"$

\

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

\

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

\

Multiply the matrix B by 5.

\

$\"\"$

\

$\"\"$ (Multiply each element by 5)

\

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

\

Perform the operation $\"\"$ 4C $\"\"$ 5B.

\

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

\

$\"\"$ (Subtract corresponding elements)

\

$\"\"$ (Product of two same signs is positive)

\

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

\

The value of ( $\"\"$ 4C $\"\"$ 5B) is $\"\"$ .