Answer:
b - (b/2 - 15)
Step-by-step explanation:
b = total number of bags
Half of the bags means b/2
I5 less than half of the bags means b/2 - 15; which is the number of bags with diabetic food
The number of bags without diabetic food means the total number of bags (b) minus the number of bags with diabetic food (b/2 - 15)
Mathematically, it will be expressed in algebra as b - (b/2 - 15)