determine the indicated matrix of operations

Question

let A= [-6 5

            1 7

            5 8]  and B = [7 -3

                                 -3  2

                                  2  5]    Find A+ B

Answer 1

A and B are both 3 x 2 matrices.  To add matrices, add the corresponding elements together:

 

(A + B)₁₁ = A₁₁ + B₁₁ = -6 + 7 = 1 and so on.