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v* = v - v/3
It follows that (v*)* = (v - v/3) - v/3
You have to perform the operation * twice.
The first part in parenthesis ( v - v/3 ) is for the first v*
Now, (v*)* is just (v - v/3) - v/3
Since it says that (v*)* = 8 then (v - v/3) - v/3 = 8
And then you just solve _________________