Question

(STA-CASA - SP) O valor...​

Answer 1

Resposta:

3^-1= 1/3

5^-1= 1/5

2^-1= 1/2

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

[(4+3)/15] / 1/2=

7/15 / 1/2=

(14+15)/30=

29/30

é 29/30