Question

Elimine os parênteses e calcule as somas:
a) +8 + ( - 5 + 2 ) =
b) + 15 + ( - 23 + 12) =
c) + 9 – ( + 4 – 20 )=
d) – 25 – ( -15 + 10) =

Answer 1

Resposta:

a +8-5+2= 5

b 15-23+12= 4

c 9-4+20 = 25

d-25+15-10= -30