Please answer if you can

Solve the equation x/4 - 5= -8 -27 -12 -7 12

Ming says that 0.24 > 1/4 because 0.24= 2/4. which best explains mings error

Sophia wrote an equation to represent the revenue of a movie theater for one day. she let x represent the number of child tickets sold and y represents the nunver of adult tickets sold. if a child ticket cost $4, an adult ticket cost $6, and the total revenue for the daybwas $420, which equation could sophia use to represent the number of chikd and adult tickets that were sold?