October 2018 2 29 Report
Efectúa las siguientes operaciones:
a) 3 +4 –5 +6 –2 –1
b) 5 –3 +4 –1 +2
c) 3 –5 –4 +7 +1
d) 5 +3 –7 –2 +1 +4 -6


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