Question

Exercício 2. Resolva as seguintes divisões:
a) (+15) ÷ (-3)
b) (-20) ÷ (-4)
c) (+10) ÷ (+5)
d) (+9) ÷ (-9)
e) (-50) ÷ (-50)​

Answer 1

Resposta:

a) (+15) ÷ (-3) = - 5

b) (-20) ÷ (-4) = + 5

c) (+10) ÷ (+5) = + 2

d) (+9) ÷ (-9) = - 1

e) (-50) ÷ (-50) = + 1

Answer 2

→ Cálculo :

Regra de sinal :        

( - ) ( - ) = +  

( + ) ( + ) = +  

( - ) ( + ) = -  

( + ) ( - ) = -

A) ( + 15 ) ÷ ( - 3 ) = -5

B) ( - 20 ) ÷ ( - 4 ) = +5

C) ( + 10 ) ÷ ( + 5 ) = +2

D) ( + 9 ) ÷ ( - 9 ) = -1

E) ( - 50 ) ÷ ( - 50 )​ = +1