Calcule as adicoes

A. (+8)+(-5)=
B.(+15)+(-3)=
C.(+10)+(-4)=
D.(-12)+(+20)=
E.(-30)+(+10)=
F.(+1)+(-8)=
G.(+3)+(-10)=
H.(-4)+(+1)=
I.(-8)+(+1)=
J.(-3)+(+3)=
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