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:
[tex]\frac{7TQ}{6}=7x- \frac{7}{3} [/tex]
Subtract [tex] \frac{65}{3} [/tex] from both sides to get:
[tex] \frac{7TQ}{6}- \frac{65}{3}=7x-24 [/tex]
Substituting PT for 7x-24, we see that:
[tex]PT= \frac{7TQ}{6} - \frac{65}{3} [/tex], which is our answer.
