Respuesta :

stringman
The answer is A. -43. All of thos additions of minus values are made substraction afterwards.
Neuron
If you would like to solve - 21 + (- 13) + (- 9), you can calculate this using the following steps:

- 21 + (- 13) + (- 9) = - 21 - 13 - 9 = - 43

The correct result would be A. - 43.

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