A book has 180 pages. Hailey read 12 pages each day. After a certain number of days, there are 60 pages left. Which equation, when solved for x, gives the number of days Hailey read?

Responses
A 60 + 12x = 18060 + 12x = 180
B 180 + 12x = 60180 + 12x = 60
C 60 + 180 = 12x60 + 180 = 12x
D 60 − 12x = 180