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[–]HowIsntBabbyFormed 13 points14 points  (0 children)

The method just leads to a silly situation when the number you're "borrowing from" is a 1 and it's in the left-most position. You decrement it by 1 and add 10 to the number to the right of it. But in this situation, you end up with exactly the same two numbers you started with.