Question

1-{-2/5-(-1/2+3/4)-0,5}

Answer 1

Resposta:

43/20

Explicação passo-a-passo:

1-{-2/5-(-1/2+3/4)-1/2}=

1-{-2/5-(-2/4+3/4)-1/2}=

1-{-2/5-1/4-1/2}=

1-{-8/20-5/20-10/20}=

1+23/20=

20/20 + 23/20=

43/20