Answer: 84.728
Step-by-step explanation: 105.91•.20=21.182
105.91-21.182=84.728
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For this case we have that by definition, the Greatest Common Factor or GFC of two or more numbers, is the largest number that divides them without leaving residue.
So:
We look for the factors of 18 and 36:
18: 1,2,3,6,9,18
36: 1, 2,3,4, 6,9,18 ...
Thus, the GFC of both numbers is 18.
Then, the GFC of
and
is:

Answer:

I think
Dbc means triangle or some type of shape):
Answer:
I think it is D it makes the most sense