Question

7. Efetue as operações com números inteiros.
a) (+ 4) + (+ 3) =
b) (– 6) + (+ 7) =
c) (+ 6) – (+ 4) =
d) (– 3) – (– 5) =
e) (– 7) – (+ 4) + (– 8) =
f) (+ 4) ∙ (+ 5) =
g) (– 5) ∙ (+ 8) =
h) (+ 5) ∙ (+ 3) ∙ (– 4) =
i) (+ 36) ÷ (– 3) =
j) (– 24) ÷ (– 6) =

Answer 1

Resposta:

3

$3 + 4(4 + 3 = 7$

Answer 2

a) (+ 4) + (+ 3) = -7

b) (– 6) + (+ 7) = +13

c) (+ 6) – (+ 4) = -2

d) (– 3) – (– 5) = - 2

e) (– 7) – (+ 4) + (– 8) = +11

f) (+ 4) ∙ (+ 5) = - 20

g) (– 5) ∙ (+ 8) = +40

h) (+ 5) ∙ (+ 3) ∙ (– 4) = +60

i) (+ 36) ÷ (– 3) = +12

j) (– 24) ÷ (– 6) = -4