Question

If infinity - infinity is not 0 then why 7.7 bar - 0.7 bar = 7

Answer 1

infinity is a very vague term defined by us to blame for answers we sometimes cannot get , while 0.7bar = 0.7bar , therefore they cut each other , in 0.7bar we know that theres a number 7 which repeats itself forever and so they cut, but in infinty we have no clue what is there