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Answers for Row 1:  2, -6, -1

Answers for Row 2:  0, 5, 0

Explanation:

When we add matrices, we must first make sure they are the same dimensions. In this case, both are 2x3 matrices, so we can add them.

To add matrices, you add the corresponding components.

For example, in the first row, first column, we have B+A = -2+4 = 2. So the value 2 will go in the first row, first column, of the answer matrix.

The other elements are handled in a similar fashion.

step-by-step explanation:

b and c

1/800 is the right answer