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What does -18 plus 21 equal?

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Anonymous

∙ 16y ago
Updated: 9/16/2023

I think it's -39

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Wiki User

∙ 16y ago
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Continue Learning about Math & Arithmetic

What does eighteen plus three equal?

18 + 3 = 21


What is one half plus twelve over eighteen equal?

1/2 + 12/18 = 9/18 + 12/18 = 21/18 = 7/6


Which property does 21 plus 18 equals 18 plus 21?

Commutativity or Abelian property


What is 25 plus 21 plus 19?

25 plus 21 plus 19 is equal to 65.


What does 29 plus 18 plus 21 equal?

The answer is 68. Simply add the numbers together arithmetically as you would for the problem two plus two. To check your work, a calculator is the best option.

Related Questions

What does 18 plus 3 equal?

-15.


What does eighteen plus three equal?

18 + 3 = 21


What is one half plus twelve over eighteen equal?

1/2 + 12/18 = 9/18 + 12/18 = 21/18 = 7/6


Which property does 21 plus 18 equals 18 plus 21?

Commutativity or Abelian property


What 21 plus 21 equal?

21 + 21 = 42.


What is 18 plus 3?

-21


What does -21 divided by 18 equal?

-39


What is 25 plus 21 plus 19?

25 plus 21 plus 19 is equal to 65.


What is 16 plus 16 plus 16 plus 17 plus 18 plus 18 plus 18 plus 19 plus 19 plus 20 plus 20 plus 20 plus 21?

16 + 16 + 16 + 17 + 18 + 18 + 18 + 19 + 19 + 20 + 20 + 20 + 21 = 238


What does --21 equal?

18


What does 18 plus 18 equal?

36


What does - 12 plus - 9 equal to?

21

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