Question

O valor de 3-¹ + 5-¹/2-¹ é:
A)1/2
B)1/8
C)4/15
D)16/15​

Answer 1

Resposta:

Letra D

Explicação passo-a-passo:

3^-1= 1/3

5^-1=1/5

2^-1=1/2

(1/3+1/5)/1/2=

(5/15+3/15)/1/2=

8/15/1/2=

8/15.2/1=

16/15