helloworld30
helloworld30
21-08-2018
Mathematics
contestada
(-9 x -3) + 27 integers
Respuesta :
Shinrinyoku
Shinrinyoku
21-08-2018
54
a rule I follow:
same signs positive,
different signs negative.
-9 * -3 = 27
27 + 27 = 54
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