Question

Aplique a regra dos sinais e resolva.

a) -5× (-4) =

b) - (+6) × (-8) × (-8) × (+3)=

c) 6× - (+5) =

d) 3×9 × ( -5) =

e) 1× ( -8) =

f) -10 × (+3) × 1 =​

Answer 1

Olá

a)

$- 5 \times ( - 4) = 20$

b)

$- ( + 6) \times ( - 8) \times ( - 8) \times ( + 3) = - 1152$

c)

$6 \times ( - 5) = - 30$

d)

$3 \times 9 \times ( - 5) = - 135$

e)

$1x( - 8) = - 8$

f)

$- 10 \times ( + 3) \times 1 = - 30$

Answer 2

Explicação passo-a-passo:

-5× (-4)

+20

- (+6) × (-8) × (-8) × (+3)

-6×-8×-8×3

48×-8×3

-384×3

-1152

6× - (+5)

6×-5

-30

3×9 × ( -5)

27×-5

-135

1× ( -8)

-8

-10 × (+3) × 1

-30×1

-30