Question

Matrices A and B shown below are equal.

What is the value of b₁₂

–18

3

7

24

Answer 1

A, -18

Explanation:

EDGE 2020

Answer 2

-18

Explanation:

see attachment for the figure.

If the two matrices are equal. In this way, the amount in the upper, right-hand corner of A (which is - 18) is equivalent to the amount in the upper, right-hand corner of B, which is b₁₂

Therefore, the first answer choice (-18) is the correct one.