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Mathematics 20 Online
OpenStudy (anonymous):

Evaluate -9 - (-4)

OpenStudy (anonymous):

-5

OpenStudy (anonymous):

same as -9+4=-5

OpenStudy (anonymous):

-5 -9-(-4) can be turned into -9+(+4) or -9+4 so that equals -5! :D

OpenStudy (anonymous):

whenever you have a subtraction of a negative, you always add. therefore, you would have -9 + 4 which equals -5

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