April 2021 1 12 Report
resolver sumas algebraicas
a. -9+5-8+10-3
b. +9-7+10-6+3
c. -1+9+4+13_17-20+2
d.+15-28+11-34+19-27

e. -52+62-32-12
f. -44+71-66+17
g. 112+100-26-102
h. 114+61-41-113

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