Question

Por favor ajuda
(questões anexadas)​

Answer 1

Resposta:

4)

(3/5)/4=(3/5)×(1/4)=3/20

5)

[1+((1/5)-2)/3]/(2/3)-1

[1-(9/5)/3]/(-1/3)

[1-(9/5*1/3)]/(-1/3)

(1-3/5)/(-1/3)

(2/5)*-3

-6/5

Alternativa c

6) 5-¹ + 5-²= 5-³

Alternativa A