I just started learning about Matrix and I got this as a warm-up problem, but I don't know how to solve it and the examples in my textbook aren't anything like this one: [4x 3y] = [12 -1]

Question

Please help.

Answer 1

Since the two matrices have the same size and they are equal, corresponding elements must be equal.
Thus:
4x = 12 ----> x = 3
3y = -1 ----> y = -1/3

Answer 2

OHHH. I GOTCHA. THANKS