Respostas

  • Usuário do Brainly
2014-08-05T18:59:54-03:00
 \frac{1}{3} -1= \frac{1-3}{3} =- \frac{2}{3}

(- \frac{2}{3} ) ^{3} = -\frac{8}{27}

O oposto de - \frac{8}{27} =+ \frac{8}{27}
4 4 4