Question

Given the following matrices, find 3A - 2B. (Hint: find 3A and 2B first and then subtract.)

Answer 1

Its A
When you multiply a constant k to a matrix, you multiply all the corresponding numbers in the matrix by k.
So 3A would be = 3 9 15 6 and 2b would be = 8 18 0 6 Now subtract it. to get your answer