Question

calcule :
a) 10 + ( - 6 ) =

b) 10 + ( + 20 ) =

c) ( - 8 ) - ( + 20 ) =

d) ( 21 ) - ( - 25 ) =

e) ( 9 - 20 ) - ( - 20 ) =

f) ( + 7 ) + ( + 23 ) =

g) ( - 65 ) + ( 100 ) =

Answer 1

a)-16

b)+30

c)+28

d)-4

e)nao entendi

f)+30

g)-165

Answer 2

Resposta:

a)10-6= 4

b)10+20= 30

c)(-8)+20= 12

d)21-25= -4

e)9-20= -11-20= -31

f)7+23= 30

g)(-65)+100= 35

Explicação eu acho