Question

1) Calcule o valor das expressões:

a) [ 10 – ( 8 + 4) . (8 - 4)] : 2 =
b) { 12 – ( 6 + 5) ( 8 - 5) + (5 - 7). [ 42 : (-6)] – 25} =
c) 6 – ( -7) + 7- (-9) – 51 =
d) 7 – (-3) + 8.(7 - 12) – (-15) =
e) 12 + {4.(12 - 9) – (48 : 6) + [ 65: (2 - 7)] } =

Answer 1

a)[ 10 – ( 8 + 4) . (8 - 4)] : 2=
{10 - (12 . 4)}:2=
{10- 48}:2=
38 : 2=
19