Respuesta :

nli32

Answer: -30

-18 -27 -(-15)

-18 -27 +15

-45 +15

-30

Step-by-step explanation:

Answer:

-30.

Step-by-step explanation:

r - s - t

= -18 - 27 - (-15)

= -18 - 27 + 15

= -45 + 15

= -30.