Respuesta :

Space

Answer:

-3

Step-by-step explanation:

Order of Operations: BPEMDAS

Step 1: Parenthesis

(105 ÷ -5)/(45 ÷ -9 + 12)

Step 2: Divide

-21/(-5 + 12)

Step 3: Parenthesis

-21/7

Step 4: Divide

-3