Question

7) Resolva:

A) (+3) + (– 2) + (– 5) = B) (– 2) – (+1) – (+5) =

C) (+4) + (– 2) – (+3) = D) (+5) – (– 3) – (– 1) =

E) (+4) + (– 6)– (+7)– (– 6) + (+7) =

8) Efetue:

A) (+5) ∙ (+ 3) = G) (+ 15) ÷ (−4 + 1) =

B) (+ 4) ∙ (– 5) = H) (+ 20) ÷ (− 2) =

C) (– 8) ∙ (+ 4) = I) (– 35) ÷ (+ 7) =

D) (– 6) ∙ (– 7) = J) (– 40) ÷ (– 5) =

E) (– 2) ∙ (+4) ∙ (+3) ∙ (– 1) = K) (+ 51) ÷ (– 3) =F) (– 5) ∙ (– 6) ∙ (– 2) = L) (− 3). (−15): (−3) =​

Answer 1

Explicação passo-a-passo:

(+3) + (– 2) + (– 5)

3-2-5

1-5

-4

(– 2) – (+1) – (+5)

-2-1-5

-3-5

-8

(+4) + (– 2) – (+3)

4-2-3

2-3

-1

(+5) – (– 3) – (– 1)

5+3+1

8+1

9

(+4) + (– 6)– (+7)– (– 6) + (+7)

4-6-7+6+7

-2-7+6+7

-9+6+7

-3+7

4

(+5) ∙ (+ 3)

+15

(+ 4) ∙ (– 5)

-45

(– 8) ∙ (+ 4)

-32

(– 6) ∙ (– 7)

+42

(– 2) ∙ (+4) ∙ (+3) ∙ (– 1)

(-8).(+3).(-1)

(-24).(-1)

24

(– 5) ∙ (– 6) ∙ (– 2)

(+30).(-2)

-60

(+ 15) ÷ (−4 + 1)

(15)÷(-3)

-5

(+ 20) ÷ (− 2)

-10

(– 35) ÷ (+ 7)

-5

(– 40) ÷ (– 5)

+8

(+ 51) ÷ (– 3)

-17

(− 3). (−15): (−3)

(+45)÷(-3)

-15