Question

Efetue: Me ajudemmmm, obrigada.
a) (-2)+(-7)=
b)-6+7+2+(-12)=
c)(-16)+(+23)=
d)-5-7=
e)(+4)+(+16)=
f)(-6)+(-8)=

Answer 1

a) (-2)+(-7)=
-2-7= - 9

b)-6+7+2+(-12)=
-6+7+2-12=
-6-12+7+2=
-18+9= - 9

c)(-16)+(+23)=
-16+23 = 7

d)-5-7= - 12

e)(+4)+(+16)=
4+16 = 20

f)(-6)+(-8)=
-6-8 = - 14

Um abraço.