if we choose a number, let's call it x, and we perform this operations we would get a fixed number, that we are yet to calculate.
But doing that way would be doing by deductive reasoning.
The inductive reasoning way would be to arrive at this conclusion after picking a random number, for example, twice.
If we pick, for example, the number 1.
Add 16, we get 17.
Multiply by 3, we get 51.
Add 2, we get 53.
Substract twice the original number, we get 51.
Substract 50, the result is 1.
If we pick the number 2,
Add 16, we get 18.
Multiply by 3, we get 54.
Add 2, we get 56.
Substract twice the original number, we get 52.
Substract 50, we get 2.
We can induce, by the results we are having, that the result is equal to the number we pick in the first place.