for all positive integers (like n = 1, 2 or 5) the conjecture holds true but not for negative values like if n = -3 then the result will not become positive, because:

which is not positive.
The factors are the numbers being multiplied together
2 1/9 as improper fraction= 19/9
19/9(4/4)=76/36
7/6(6/6)= 42/36
76/36-42/36=34/36
34/36=17/18
The answer is 17/18.
Hope this helps!