What is the solution or solutions for 3[-3x+9]=-18

Simplify both sides of the equation.

3 (-3x+9) = - 18

(3) (-3x) + (3) (9) = - 18 (Distribute)

-9x+27=-18

Subtract 27 from both sides.

-9x+27-27=-18-27

-9x=-45

Divide both sides by - 9.

-9x/-9=-45/-9

x=5

It could be made more easy if you take the negetive out ... so that it can be written as

- 3 (3x - 9) = - 18

3x - 9 = - 18/-3

3x - 9 = 6

3x = 6 + 9

3x = 15

x = 15 / 3 = 5