Respuesta :
Answer:
21
Step-by-step explanation:
Since (-6) is a negative number, we will have to cancel it out with positive 6 to get to 0. Then you add 6 and 15 to get 21.
Answer:
21
Step-by-step explanation:
Since (-6) is a negative number, we will have to cancel it out with positive 6 to get to 0. Then you add 6 and 15 to get 21.