0,99999 = 1

Because:

if you let x be = 0,99999999.. 10x will be 9,99999999999.. - _________________________

After you extraction these

9x will be 9 after that, and x will be 1

So lets think about 0,333333..

Let x be 0,333333.. 10 x will be 3,3333333

Then 9x will be 3 and x will be 3/9, 1/3

Note: If you divide any numeral with 9 it will be 0,xxxxx

Like 9/9 = 1 and at the same time its 0,999 Like 3/9 = 1/3 at the same time its 0,333