0.999999..... is not thesame as 1, it's very close but it's not thesame,..
0,0 is not the same as 0
0,5 is an exact number, but 1/2 is,
1 is an exact number 1,0 is not
U can never say that 0,99999... is thesama as 1 because numbers countinues forever, if they do that it will never be an exact number, but 1 is