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
