06-24-2011, 05:46 PM
Another easy way to prove it:
1/9 = 0.1...
2/9 = 0.2...
3/9 = 0.3...
etc.
So 9/9 = 0.9...
But 9/9 must also equal 1, so 0.9... = 1
1/9 = 0.1...
2/9 = 0.2...
3/9 = 0.3...
etc.
So 9/9 = 0.9...
But 9/9 must also equal 1, so 0.9... = 1