Question

Quanto e? 1 - colchetes - 2/5 - abre parentes - 1/2 + 3/4 fecha parentes - 0,5]​

Answer 1

Resposta:

Explicação passo-a-passo:

1-[-2/5 - (-1/2 +3/4) -0,5]=

1-[-2/5 -(-2/4+3/4) -5/10]=

1-[-2/5-(+1/4)-5/10]=

1-[-8/20-5/20-10/20]=

1-[-23/20]=

20/20 + 23/20=

43/20