Hex Subtraction
$ 34
- $ 27 -------- $ 0D 4-7 = D; with borrow of 1 from next column
3 - 1 (borrow) - 2 = 0. answer = $ 0D.
$ 34 = 3 x 16 + 4 = 52 $27 = 2 x 16 + 7 = 39 52 - 39 = 13
$ 0D = 13 !!
Decimal check.
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