We can't find what PT exactly is because we don't know TQ or x. However, we can find PT in terms of TQ!
Multiply the second equation by seven sixths to get:
\(\frac{7TQ}{6}=7x- \frac{7}{3}\)
Subtract \(\frac{65}{3}\) from both sides to get:
\(\frac{7TQ}{6}- \frac{65}{3}=7x-24\)
Substituting PT for 7x-24, we see that:
\(PT= \frac{7TQ}{6} - \frac{65}{3}\), which is our answer.