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Old May 8, 2008, 12:06 AM   #6 (permalink)
ctenidae
 
Join Date: Nov 2004
Location: Boston
Posts: 4,795
Quote:
Originally Posted by Hawkshot99 View Post
The subrtracting will always give you a multiple of 9. 9, 18, 27, 36...... Look at all the multiples of 9 on the chart, they all have the same symbol.
This is correct.

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