9. (3 points) At Dongfang Primary School, Grade 6 selected $\frac{1}{11}$ of the girls and 22 boys to participate in the "Spring Welcome Cup" Math Competition. The remaining number of girls is twice the remaining number of boys. It is also known that the number of girls is 2 more than the number of boys. How many students are there in Grade 6 of this primary school?
【Solution】Solution: Let the number of girls be $X$ people, and the number of boys be $x-2$ people,
$$
\begin{array}{l}
(x-2-22) \times 2-x\left(1-\frac{1}{11}\right)=0, \\
2 x-48-\frac{10}{11} x=0, \\
x=44 ; \\
44-2+44=86 \text { (people); }
\end{array}
$$

Answer: The sixth grade of this primary school has a total of 86 people.
The answer is: 86.