This is how .999_ = 1
x = .999_
10x = 9.999_
10x - x = (9.999_ - .999_)
9x = 9
x = 1
.999_ = 1
To further prove this, look at 3/3. .333_ = 1/3, and 3/3 = 1. Therefore, .999 = 1.
Now, it can be argued that 1=2.
0 x 1 = 0
0 x 2 = 0
So than this must be true:
0 x 1 = 0 x 2
Similarly:
0/0 x 1 = 0/0 x 2
Simplified,
1 = 2
Troll or remedial algebra failure.