Answer:
Zero
Step-by-step explanation:
In math, an identity is a number, n, that when added to other numbers, gives the same number, n. The additive identity is always zero. This brings us to the identity property of addition, which simply states that when you add zero to any number, it equals the number itself
She took 7 boxes of carrots and 9 boxes of potatoes home.
75 boxes of carrots - 68 boxes of carrots = 7 boxes of carrots.
80 boxes of potatoes - 71 boxes of potatoes = 9 boxes of potatoes.