Find the value of x in 3x=3

Ahome improvement store rents it’s delivery truck for $19 for the first 75 minutes and $4.75 for each additional 1/4 hour. if a customer rented the truck at 11: 10 am and returned the truck at 1: 40 pm the same day, what would his rental cost be?

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

What value of x is in the solution set of 4x – 12 s 16 + 8x?