Samantha donated 5 T-shirts to charity and has 16 left. Which equation could be used to find x, the number of T-shirts Samantha had originally?
A. x + 16 = -5
B. x - 5 = -16
C. x + 5 = 16
D. x - 16 = 5
It would be D. because if, say, x was a 5, 5-16=5, whereas all the other answers have it in the wrong order or have an addition instead of a subtraction. Hope this helps :)
