0.999999... = 1?

What the fuck. Why is that true. They got different numbers in them.

.9999999 does not equal 1. It equals .9999999.
 0.9(Dash above the 9) on the other hand, DOES equal 1. 1/3=0.3(Dash above the 3) times that by 3 and you get 0.9(Dash above the 9) And 1/3x3 equals 1. Think of the same rules as infinity, except with decimal places. But, .9999999999999(Put as many 9s as you want) does not equal 1, because  .999+0.001 equals 1. It needs the dash ontop of the 9 to indicate that it has infinite decimals.