I’m assuming this is set equal to 0?
If it is, then divide by -2 on both sides to get
-4.5x=0
The divide -4.5 like you did earlier to get
X=0
If not you could just multiply-4.5*-2 which is 9
But really there are no like terms connecting these so 9 isn’t really a plausible answer it really depends what the other side of the equation is
