Sorry to break the news to you, but in our universe the only reality that is infinite is space. Everything else is finite. Only space has no borders.
If we halve an apple and then halve the pieces and do so ad infinitum, then the human brain can go on forever, but the apple gives way much sooner.
After thirty half-cuttings, the apple has turned into apple sauce. After one hundred half-cuttings, not even the flavor is around anymore.
Infinity is verye asy to understand with the human brain. But it is a concept that exists in the brain for real. In the universe, infinity can only be discovered with space.
'1 + x = 1' because the former 1 transformed into the current 1.