Question

03. Resolva as seguintes expressões: c) 25 + 9 -4 x 7 = a) 40 + {35 - [8 + (16 - 7) + 9]} = d) 8 + [46 - (18 + 8 x 2)] = b) 8 x 3 + 5 - 8 =​

Answer 1

Resposta:

$25 + 9 -4 x 7 = \\\\=25+9-28x\\\\=-28x+34\\\\\\\\40 + {35 - [8 + (16 - 7) + 9]}\\\\=40+35-26\\\\=49\\\\\\8 + [46 - (18 + 8 x 2)] =\\=8+46-\left(18+8x\cdot \:2\right)\\\\=8+46-\left(16x+18\right)\\\\=8+46-18-16x\\\\=-16x+36\\\\\\\\8 x 3 + 5 - 8\\\\=24x+5-8\\\\=24x-3$

Answer 2

Resposta:

A - 40 + {35 - [ 8 + (16 - 7) + 9]} =

40 + {35 - [(8+9+9)]}

40 + {35 - [(8+18)]

40 + {35 - 26}

40 +9 = 49

B - 8 × 3 + 5 - 8 =

24 + 3

27

C - 25 + 9 - 4 x 7 =

34 - 28

6

D - 8 + [46 - (18 + 8 x 2)] =

8 + [46 - ( 18 + 16)] =

8 + [46 - 34] =

8 + 12 =20

Explicação passo-a-passo:

Espero ter ajudado!