24. Given A =









− −
0 3 1 10
2 5 8 6

and C =










− −
3 1 2 7
10 4 5 8

, and A + B = C, what is B?

To find B, we need to subtract matrix A from matrix C.

Matrix subtraction is done by subtracting each corresponding element in the matrices.

So, B = C - A

=










− −
3 1 2 7
10 4 5 8

-









− −
0 3 1 10
2 5 8 6

=










− −
3-0 1-3 2-1 7-10
10-2 4-5 5-8 8-6

=










− −
3 -2 1 -3
8 -1 -3 2

So, B =









− −
3 -2 1 -3
8 -1 -3 2