Question

15. Determine o valor das expressões
numéricas

c) (+8/5):(-4)-6•(-1/4)​

Answer 1

Resposta:

= 8/5 ÷ (- 4) - 6 . (- 1/4)

= - 8/5 ÷ 4 - 6 . (- 1/4)

= - 8/5 ÷ 4 + 6 . 1/4

= - 8/5 . 1/4 + 6 . 1/4

= - 8/5 . 1/4 + 3 . 1/2

= - 2/5 + 3 . 1/2

= - 2/5 + 3/2

= (- 4 + 15)/10

= 11/10

= 1,1