Solve: 9x + 1 = 5x - 19

Find x & pleeeeaaaassseeee me !

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

Two numbers have a sum of -19. one number is x. what expression represents the other number?