Question

Vamos calcular:

A) (+10):(+1)=
B) (+9):(+3)=
C) (-15):(-5)=
D) (-72):(-4)=
E) (-75):(+15)=
F) (+10):(-1)=

Me ajudem plis​

Answer 1

→ Cálculo :

Regra de sinal :    

( - ) ( - ) = +  

( + ) ( + ) = +    

( - ) ( + ) = -    

( + ) ( - ) = -

A) ( + 10 ) ÷ ( + 1 ) =  +10

B) ( + 9 ) ÷ ( + 3 ) = +3

C) ( - 15 ) ÷ ( - 5 ) = +3

D) ( - 72 ) ÷ ( - 4 ) = +18

E) ( - 75 ) ÷ ( + 15 ) = -5

F) ( + 10 ) ÷ ( - 1 ) = -10