Respuesta :

DGBxBigxBrain

Answer:

-9

Step-by-step explanation:a negative number plus a negitive must be negative and it’s basically the same except you add the minus sign as positive adding

katherineye2007

Answer:

-9

Step-by-step explanation:

when adding - numbers if they're both negative then add then and put the negative sign in front

-2+-7

both negative

so add

7+2 =9

then - sign

-9