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Mathematics 13 Online
OpenStudy (anonymous):

second stop in finding sum of -13 + -21

OpenStudy (anonymous):

easy ok

OpenStudy (anonymous):

a negative plus a negative equals a negative still so what you do is add the numbers as if they didn't have negative signs, then just add the sign :P

OpenStudy (anonymous):

|dw:1410296115892:dw|

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