The answer is 16.
The range is the difference between the largest and smallest values:
Largest: 7
Smallest: -9
Difference = 7 - (-9) = 16
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1 + 2 = 3
2/6 + 2/3 = 1/3 + 2/3 = 3/3 = 1
(1/2) divided by (3/4) = 2/3 or 0.6666667
3,3,4,2,1,3,3 3-3=0 range=0
The range ot 2, 1, 3, 4, 4, and 4 is 3.