Can someone answer this question really quick

The Bobcats football coach logged the following yardage gains and losses over four plays of a game.

1. Gain 25x yards.
2. Gain 0.9y yards.
3. Lose 12y yards.
4. Lose 5.2x yards.
What is the net yardage for these four plays?

Enter your answer as an expression, like this: 42x+53y