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How do you simplify 12 -- 30?

Updated: 8/17/2019
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Wiki User

12y ago

Best Answer

-18

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Jordyn Pfeffer

Lvl 10
3y ago
This answer is:
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Wiki User

12y ago

two of the same sign means it becomes a plus e.g

- - = +

++ = +

two different signs means it becomes a minus e.g

- + = -

so the question simplified is....

12 + 30 = 42

hope that helps :)

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Q: How do you simplify 12 -- 30?
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