Let's analyze the problem step by step:
1. Determine the voting power of each manager:
* Abbos: 35 points
* A'zam: 13 points
* Ozod: 9 points
* Jasur: Since Jasur is the newest member of the company, his time in the company must be less than Ozod's, which is 9 years. To find the minimum number of years after which Abbas's vote will not be decisive, let's denote Jasur's time in the company as *x* years, where *x* < 9. The total voting power of the other three managers is: 13 + 9 + x = 22 + x
2. To make Abbas's vote not decisive, his points must be less than or equal to the sum of the other managers' points:$$35 \le 22 + x$$$$x \ge 35 - 22$$$$x \ge 13$$
This is not possible since x < 9.
Let denote $$y$$ as the number of years passed until the next time of voting. After $$y$$ years the points for each manager is:
* Abbos: $$35 + y$$ points
* A'zam: $$13 + y$$ points
* Ozod: $$9 + y$$ points
* Jasur: $$x + y$$ points
For Abbas's vote not to be decisive, we require:$$35 + y \le (13 + y) + (9 + y) + (x + y)$$$$35 + y \le 22 + 2y + x + y$$$$35 + y \le 22 + x + 3y$$$$13 \le 2y + x$$Since $$x < 9$$, in the best case $$x$$ is equal to 0.
$$13 \le 2y + 0$$$$13 \le 2y$$$$y \ge 6.5$$We must search for the minimum integer value, which is $$y = 7$$.
Therefore, after a minimum of 7 years, Abbas's vote will no longer be decisive.
Answer: 7