Respuesta :

Answer:

9r

Step-by-step explanation:

4r+9r-11r+7r

Combine like terms

13r -11r+7r

2r+7r

9r

Answer: 9r

Step-by-step explanation:

4r + 9r - 11r + 7r

13r - 11r = 2r

2r + 7r = 9r

~I hope I helped you! :)~

Q&A Education