SOLUTION: 8d=7d+13

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Question 116462: 8d=7d+13
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
8D=7D+13
8D-7D=13
D=13 ANSWER.
PROOF
8*13=7813=13
104=91+13
104=104