I cannot figure this out!

Question

A local hamburger shop sold a combined total of 443

 hamburgers and cheeseburgers on Thursday. There were 57

 fewer cheeseburgers sold than hamburgers. How many hamburgers were sold on Thursday? 

Answer 1

h + c = 443

c = h - 57

Substitute!

h + h - 57 = 443

2h = 500

h = 250 hamburgers