Respuesta :

rijarafiquee

Answer:

16b^5 - 8

Step-by-step explanation:

(4b5 - 7) + (12b5 - 1)

4b^5 - 7 + 12b^5 - 1

4b^5 + 12b^5 - 7 - 1

16b^5 - 8