Question

Find the sum or difference.

please help, and if you can explain it would be great! :)

Answer 1

really guys? I just need help

Answer 2

To add these, you just add the corresponding components

Answer 3

first row, first column:

-8 + (-2) = -10

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first row, second column:

-1 + 0 = -1


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first row, third column:

7 + (-2) = 5

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etc etc

Answer 4

I knew it was something simple. but just could not get to it. thank you very much

Answer 5

you're welcome