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Mathematics 10 Online
OpenStudy (anonymous):

wats 12-(-7)

OpenStudy (anonymous):

19

OpenStudy (anonymous):

thanks

OpenStudy (anonymous):

I guess you have recovered now?

OpenStudy (anonymous):

i dnt have a calculator and dnt have time for simple math

OpenStudy (anonymous):

negative * negative = positive

OpenStudy (anonymous):

why

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