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The additive inverse is the sum of two numbers that will equal zero. The additive inverse of -18 is 18.

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Q: What is the additive inverse of 18?
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What is the additive inverse of eighteen?

The additive inverse of 18 is -18. The additive inverse of any number is the opposite of that number, such that the sum of the original number and the additive inverse is zero.


What is the additive inverse of 18 23-?

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Which type of number is the additive inverse of 18?

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It is a positive number. Specifically it is 18.


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A number and its additive inverse add up to zero. If a number has no sign, add a "-" in front of it to get its additive inverse. The additive inverse of 5 is -5. The additive inverse of x is -x. If a number has a minus sign, take it away to get its additive inverse. The additive inverse of -10 is 10. The additive inverse of -y is y.


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The additive inverse of x is -(x), so the additive inverse of -45 is -(-45), or 45.


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