Respuesta :

Answer:

x=0

Step-by-step explanation:

9x-7=-7

Add 7 to each side

9x -7+7 = -7+7

9x = 0

Divide each side by 9

9x/9 = 0/9

x = 0

Answer: x = 0

Step-by-step explanation:

9x -7 = -7       First add 7 to both sides

    +7    +7  

9x =  0     Now divide both sides by 9

x = 0