Respuesta :

letmelive63

Answer:

9+4n-1=

Step-by-step explanation:

first you substitute n for 3

next you do 4*n=12

then you finish the problem

with order of operations

4*3=12

12+9=21

21-1=20

20 is your answer

hope this helped    ≈izzie

Answer:

20

Step-by-step explanation: