Pls do this ty
During the summer, Matthew and Devan started their own business mowing lawns for people in the Lake Section. Before starting any work, Matthew spends $15 to fill up the gas tank for the lawnmower. The boys agree that each person will earn the same amount after Matthew is reimbursed the money he spent for gas. After a week of work, the boys earn a total of $243. Matthew filled up the gas tank just once.
Write an equation to represent the situation.