At their going-out-of-business sale, Bill's Bikes sold 40 bikes and had 55 left. Which equation could be used to find x, the number of bikes the store had originally?

Question

A.
x + 40 = 55
B.
x + 55 = -40
C.
x - 40 = -55
D.
x - 55 = 40

Answer 1

A. x + 40 = 55