Respuesta :

Answer:

x=9.875 or 9 7/8

Step-by-step explanation:

x-9x+1 = -80

-8x+1 = -80

-8x = -79

8x = 79

x=9.875 or 9 7/8

Answer:

x=9

Step-by-step explanation:

-9x+1=-80

-9x=-81

9x=81

x=9