1. The mathematical operation of taking away one number from another; the process of removing or deducting something
The teacher explained several subtractions on the blackboard.
A professora explicou várias subtrações na lousa.
2. Instances or acts of removing or deducting things, amounts, or elements from a total
The subtractions from his salary were listed on the paycheck.
As subtrações do seu salário estavam listadas no contracheque.
3. In a broader sense, the act of removing or taking away something from a larger whole
The subtractions of expenses reduced the final profit.
As subtrações de despesas reduziram o lucro final.