Question

calcule as questões a seguir:
A) (-1)+(+7) =
B) (+16)-(+8)=
C)(-21)+(-17)=
D)(-31)-(+31)=
E) (+48)+(-47)
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Answer 1

Resposta:

) (-1)+(+7) = 6

B) (+16)-(+8)= 8

C)(-21)+(-17)= -38

D)(-31)-(+31)= -62

E) (+48)+(-47) 1