[tex] {\huge {\mathfrak {\orange {Answer :-}}}} [/tex]
9x + 6 represents the total cost for the three friends to see movie.
Thus, cost of a movie is
= (9x + 6) / 3
= 3(3x + 2) / 3
= 3x + 2
➡️ [tex] <b> Cost of a movie is (3x + 2).</b>[/tex]
That's it..