Question

4) Resolva as expressões numéricas
a) 27 ÷ 9 + (12 x 4 - 1)
b) 3 x 12 x 6 - 4 x 5 + 12 ÷ 6
c) (100 + 5 + 2 x 10) + (8X 10 - 15 X 4)
d) {2 + (2 + (3 x 10 - 4 x 5 - 2) - 5x3] x 3)​

Answer 1

Resposta:

a) 50

b) 198

c) 265

d) - 9

Explicação passo a passo:

a) 27 ÷ 9 + (12 x 4 - 1)

3 + (48 - 1)

3 + 47

50

b) 3 x 12 x 6 - 4 x 5 + 12 ÷ 6

36 x 6 - 20 + 2

216 - 20 + 2

196 + 2

198

c) (100 + 5 + 2 x 10) + (8X 10 - 15 X 4)

(105 + 20) + (80 - 60)

125 + 140

265

d) {2 + [2 + (3 x 10 - 4 x 5 - 2) - 5x3] x 3}

{2 + [2 + (30 - 20 - 2) - 15] x 3}

{2 + [2 + (10 - 2) - 15] x 3}

{2 + [2 + 8 - 15] x 3}

{2 + [10 - 15] x 3}

{2 + (- 5) x 3}

{2 - 5 x 3}

{(- 3) x 3}

(- 9)