Question

Resolva a expressão a seguir :


4 ÷ ( - 8/5) - ( - 7/6) . ( + 3/28)

Answer 1

Resposta:

- 19/8

Explicação passo-a-passo:

= 4 ÷ ( - 8/5) - ( - 7/6) . ( + 3/28)

= - 4 . 5/8 + 7/6 . 3/28

= - 20/8 (:4)/(:4) + 7/28 . 3/6 (:3)/(:3)

= - 5/2 + 7/28 (:7)/(:7) . 1/2

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

= -5/2 + 1/8

= (-4.5 + 1)/8

= (-20+1)/8

= -19/8