Question

Which matrix is equal to c-b

Answer 1

`\left[\begin{array}{ccc}7&-20\\10&3\\6&3\end{array}\right]`

Answer 2

C - B =
`\begin{bmatrix}7 & -20\\ 10 & 3\\ 6 & 3\end{bmatrix}`

Explanation:

The given matrices are B =
`\begin{bmatrix}2 & 14\\ -6 & 5\\ 4 & 9\end{bmatrix}` and C =
`\begin{bmatrix}9 & -6\\ 4 & 8\\ 10 & 12\end{bmatrix}`

Now we have to find C - B

To find C - B we will subtract each row of B from each row of C.

C - B =
`\begin{bmatrix}(9-2) & (-6-14)\\ (4+6) & (8-5))\\ (10-4)& (12-9)\end{bmatrix}`

=
`\begin{bmatrix}7 & -20\\ 10 & 3\\ 6 & 3\end{bmatrix}`