To find the total number of students, \( t \), in Ms. Garcia's class, we know that two-thirds of the class own a pet, and that this group consists of 8 students.
We can express this information in an equation:
\[ \frac{2}{3}t = 8 \]
This means that the total number of students \( t \) can be modeled by the equation:
\[ t = \frac{8 \cdot 3}{2} \]
Therefore, to fill in the blanks in your query:
\[ \frac{2}{3}t = 8 \]
So it should be completed as:
\(\frac{2}{3}t = 8\).