Answer:
You subtract
Explanation:
Given
Borrowing Word Problem
Required
Do you add or subtract?
Take the following illustration as a point of reference:
You have 5 pens. Your friend borrowed 2 pens. How many pens do you have left?
From above:
Initially, you have 5
you lend your friend 2
Then, you have: (5 - 2) left
i.e. 3 pens left
In conclusion, you have to subtract