Answer:
27
Step-by-step explanation:
Let d = number Of drama club members
let y = number of yearbook club members
now you can write two equations, one for the total number of students, and one for the difference between them.
d + y =64
d - y = 10
to solve for d, add these two lines together (so as to remove the y’s)
2d + 0y = 74
d = 37
now substitute back into one of the formulas
d+y=64
37+y=64
subtract 37 from each side,
y = 27