Answer:
6
because when you subtract 6 from 6 you get 0
6 - 6 = 0
There's more than one way to do this problem.
Try this: Mult. both 109 and 5 by 2, obtaining 218 and 10.
What is 218 div. by 10? Do this in your head.
The angle passes 90 degrees plus an additional 55 degrees
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