Numbers don't exist. All you have are apples (in the materialist's concept of reality). And yet somehow, you are relating the apples to each other as individuals, and as groupings, and experiencing, as 'real', the "equality" of one grouping with another. How can this be when all that can exist are the physical apples?
Numbers have no physicality. Therefor they cannot exist in a materialist's reality, because in a materialist's definition of reality, existence is defined by it's physical presence.
Equal means equal. It doesn't mean not equal or somewhat equal. Equality is an ideal state (imagined, but unattainable) that logically cannot physically exist. And yet it clearly does exist as an ideal, and we use it that way, successfully, all the time. So, apparently. the proposition that existence is defined by and limited to physicality is wrong.
You would be seeking a state or condition of "equilibrium", in that instance, not of "equality". A state of equilibrium is physically possible. A state of equality is not.
What is the physicality of equality when it cannot, logically, physically exist?