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To prove: 0.9 repeating = 1
[proof follows below]
1. let x = 0.9 repeating
2. multiply each side by ten, giving
10x = 9.9 repeating
3. subtract x from the left, 0.9 repeating
from the right, giving
9x = 9
4. divide both by nine, giving
x = 1
5. yet x = 0.9 repeating
6. therefore
0.9 repeating = 1
ehh, I didn't relize there was a thread on this. I apologize for my ignorance.
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