They are the same because they are both equal to 26/21.
For the problem 22/7-2/3 divided by two you get 26/21 because 22/7-2/3=52/21.
Divide 52/21 by two and you get 26/21.
For the second problem, you get the same answer of 26/21. Because 22/7-2/3 is equal to 52/21. Divide that by two and you get 26/21.
They are equal.