You aren't subtracting a number from itself. You are subtracting a number which you have "defined" as an infinitley repeating decimal (do you see the lack of logic here?. derp) and subtracted that number from a fraction that CANNOT be defined in decimal form. This doesn't prove a thing. 1/3 - 1/3 = 0. 1/3 - .33333333333 = a very small decimal number. If you continue to try to argue this you have down's syndrome. straight up
No, you are an idiot.... Inifinity isn't a number. It's a term, defined as that which numbers cannot reach, because numbers go on forever. subtracting infinite numbers of 9 from infinite numbers of 9 fives you infinite numbers of 0s followed by a 1 because you can never get there. That's the point
Emy your math is flawed. Saying .999........ doesn't mean anything... you have to take into account that there are more numbers after the decimal that can go on to infinity places. Therefore you can't prove anything by using a ..... and say that 9.99..... -.99...... = 9. Only somebody with downs syndrome would believe that. If you want to use the amount of decimal places you have displayed then the correct math would be as follows:
x=.999 10x=9.99 10x-x=8.991 9x=8.991 x=.999
It only takes a simple understanding of basic algebra to do this... come on. 1=1 .99999=.99999 .0000000001 = .0000000001(not 0)