Respuesta :

rkssmaths

Answer:

x = -10

Step-by-step explanation:

9x-1=10x+9

9x-1+1=10x+9+1

9x=10x+10

9x-10x=10x-10x+10

-x=10

-x/-1=10/-1

x= -10

hope it's helpful ❤❤❤❤❤❤

THANK YOU.

#