Question

A] 7+{-5]=
B] [-13]+[-27=
C] [-12]+25=
D] 24-[-12]=
E] -24]-[-12]=
F]24-12=
G] -24-12=
H] 138-96
I] 55-30-40=
J] 31+[-49]=

Answer 1

Resposta:

A] 7+{-5]=

7-5= 2

B] [-13]+[-27=

-13-27= -40

C] [-12]+25=

-12+25= +13

D] 24-[-12]=

24+12=36

E] -24]-[-12]=

-24+12= -12

F]24-12=

24-12=12

G] -24-12=

-24-12= -36

H] 138-96

138-96=42

I] 55-30-40=

55-70= -15

J] 31+[-49]=

31-49= -18

Lembrando que (+)(+)=(+) (-)(-)=(+) (+)(-)=(-) (-)(+)=(-)