Sure you can. Oh I'll grant you the equation can not be solved as such, but that's what higher math is all about: what you do know of the left side can and does conclusively constrains the range of possibilities on the right.
And that applies precisely to what we're talking about, here.
So, if the left side of the equation has the same number of digits and operators as the Earth has atoms - a number that is never static - and all you know is “8”, you have some way of determining “Probably ( = 4 )”?
Right. Good luck with that.