Question

What matrix results from B+ A?
Enter your answer by filling in the boxes.

Answer 1

`\begin{bmatrix}6 & -5\\-5 & 1\\13 & 6\\-15 & -9\\\end{bmatrix}`

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Step-by-step explanation:

In the top left corner of matrix B is the value 7

For matrix A, the top left corner is -1

The values add to 7+(-1) = 6 which is the result in the top left corner box of the answer matrix.

Add the other corresponding values the same way.

As you can see, the two matrices must be the same size in order to add them. They must have the same number of rows, and the same number of columns.

Matrix addition is commutative allowing us to write B+A = A+B