Respuesta :

sbrnaries

Answer:

7d-1 is the correct answer

Step-by-step explanation:

5d+2d=7d

7-8= (- 1)

CrystalClear14

Answer:

7d - 1

Step-by-Step Explanation:

to simplify first you need to identify the like terms

5d - 8 + 2d + 7

combine like terms

5d + 2d = 7d

- 8 + 7 = -1

7d - 1