January 2020 1 23 Report
PFF me ajudem. Com conta PFF
Elimine os parenteses e determine a soma algébrica
a)28+(-37+60-26)=

b)120-(47+158-31)=

c)53+(-20+8) - (40+51)=

d)-91-(-43-55+76)=

e)108-(90+60)-(-110+20)=

f)95-(28-17-33)+(-110+6)=


PFF me ajudem!! É urgente




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