Respuesta :

Answer:

3

Step-by-step explanation:
Just do inverse:

27-7=20

20+16=36

36÷3=12

12-9=3
To check:

3+9=12

12×3=36

36-16=20

20+7=27

Answer:

It should be 3.

Step-by-step explanation:

27-7=20+16=36÷3=12-9=3