October 2018 2 18 Report
Realiza las siguientes operaciones:
a). 12 + (- 5)
b). - 10 + 2
c). - 21 + (- 11)
d). - 48 + (- 47)
e). - 39 + 51
f). - 15 - 19
g). 45 - ( - 90)
h). 12 - ( - 300)
i). - 51 + 16
j). 450 - ( - 30)
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