Question

Resolva as expressões
A) 450-[3×42+5×8]
B) 1000-{47+[ (3×9+10) +15]}
C) 5× [450-(12×11+53)]
D)82-8×7:(4-1×3)

Answer 1

Olá, boa noite!

(a) 450 - [3 × 42 + 5 × 8] =
450 - [126 + 40] =
450 - 166 =
284

(b) 1000 - {47 + [(3 × 9 + 10) + 15]} =
1000 - {47 + [(27 + 10) + 15]} =
1000 - {47 + [37 + 15]} =
1000 - {47 + 52} =
1000 - 99 =
901

(c) 5 × [450 - (12 × 11 + 53)] =
5 × [450 - (132 + 53)] =
5 × [450 - 185] =
5 × 265 =
1325

(d) 82 - 8 × 7 : (4 - 1 × 3) =
82 - 56 : (4 - 3) =
82 - 56 : 1 =
82 - 56 =
26



Espero ter ajudado.
Bons estudos! :)