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Subjects>Math>Other Math

What is negative 9 plus negative 9?

Updated: 4/28/2022

Wiki User

∙ 15y ago

Best Answer

-9 + -9

This is the same as -9 - 9...

...which equals -18

Wiki User

∙ 15y ago

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Continue Learning about Other Math

What is negative 8 plus negative 9?

9 + (-8) = 1

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Negative 12 minus 3 plus 9 is equal to -6

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What is negative 9 plus negative 9?

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