Respuesta :

marsjohnson2512

Answer:

first one is D and the second one is B

Step-by-step explanation:

Have a great day! :)

grantgreving1

Answer:

3. 73 4. -18

Step-by-step explanation:

3.

45 - (-28)

45 + 28

73

4.

-55 - (-37)

-55 + 37

- 18

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