noun
the result of a subtraction operation
verb
to take away or deduct a number or amount from another
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To find the difference between two numbers, you need to subtract one from the other.
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If you subtract the cost of the drinks, we can split the bill evenly.
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I need to subtract some calories from my diet if I want to lose weight.
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Sometimes, it's necessary to subtract negative influences from your life in order to thrive.