PEMDAS
Multiplication: 2 + 5 - 18=
Addition: 7-18=
Subtraction: -11
Answer=-11
You need to divide the amount he has by the serving size.
(3/4) / (1/6) =
= 3/4 * 6/1
= 18/4
= 4 1/2
He can make 4 1/2 servings.
A because your not dividing it by 5 your subtracting 5 from k divided by 2
