001393187 001393187

16-08-2021
Mathematics

contestada

Which expression has been simplified INCORRECTLY? * 1 point - (-9) = 9 - (+9) = -9 + (-9) = -9 + (+9) = -9

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wegnerkolmp2741o wegnerkolmp2741o

16-08-2021

Answer:

+ (+9) = -9

Step-by-step explanation:

- (-9) = 9 A negative times a negative is a positive

- (+9) = -9 A negative times a positive is a negative

+ (-9) = -9 A positive times a negative is a negative

+ (+9) = -9 A positive time a positive is a positive

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