Question

Questão 13
Calcule o valor numérico da expressão a seguir:



M ajudem nessa

Answer 1

Resposta:

$-\frac{2}{3} + 1 -\frac{3}{2} *\frac{8}{9} =\\\\-\frac{2}{3} + 1 -\frac{3.8}{2.9} =\\\\-\frac{2}{3} + \frac{3}{3} -\frac{24}{18} =\\\\\frac{-2+3}{3} -\frac{24^{:3}}{18^{:3}} =\\\\\frac{1}{3} -\frac{8^{:2}}{6^{:2}} = \frac{1}{3} - \frac{4}{3} = \frac{1-4}{3} = -\frac{3}{3} = -1$

Portanto, alternativa c) -1