Question

Matrix A = 2 -7 matrix B = -9 5
6 1 1 -1

If X - A = B, what is X?

Answer 1

To find X, we need to add A to both sides of the equation X - A = B:

X - A + A = B + A

Simplifying the left side, we get:

X = B + A

To add two matrices, we add their corresponding elements. Thus:

X = [-9+2, 5-7; 6+1, 1-1]

X = [-7, -2; 7, 0]

Therefore, X is the matrix [-7, -2; 7, 0].