subtract
UK: səbˈtrækt | US: səbˈtrækt
vt. to take away (a number or amount) from another to calculate the difference
vt. to remove or withdraw something
The word "subtract" originates from Latin subtrahere, combining sub- (under) and trahere (to pull). The morpheme sub- implies a downward or removal action, while tract (from trahere) conveys pulling or drawing away. Together, they logically form the concept of "pulling away from below," which evolved into the mathematical and general sense of deduction or removal.
Subtract 5 from 10 to get 5.
The teacher asked the students to subtract the smaller number from the larger one.
Taxes will be subtracted from your paycheck automatically.
The machine can subtract impurities from the water.
He forgot to subtract the discount when calculating the total.