I can do normal problems well, but the word problems always get me. Here it is

Adam earns $37 mowing lawns. At his favorite store it costs $6.50 to rent a newly-released videogame and $4 to rent movies.

A. write an equation that gives the amount of money Adam has left, b, after renting 1 video game and m, movies.

B.How many movies can he rent if he rents no video games?

C. How many videogames can he rent if he rents no movies?

If you can show a bit on how you got the answers and not just give them to me that would be helpful. I am horrid at word problems, thanks guys.