�ã(x+9)= -9

To solve the equation, we need to isolate the variable x. Here's how you can solve it step by step:

1. Distribute the coefficient -1 to both terms inside the parentheses:
-x - 9 = -9

2. Move the constant term -9 to the right side of the equation by adding 9 to both sides:
-x = 0

3. Now, we want to isolate the variable x. To do this, we need to get rid of the coefficient -1 that is multiplying x. Multiply both sides of the equation by -1:
(-1)(-x) = (-1)(0)
x = 0

So, the solution to the equation �ã(x+9) = -9 is x = 0.