Respuesta :
Answer:
-39
Step-by-step explanation:
i got this because if you look at it, its going up 2 so you have to subtract -2 .
and do that 21 times
Answer:
-39
Step-by-step explanation:
i got this because if you look at it, its going up 2 so you have to subtract -2 .
and do that 21 times