Question

Qual é o valor da dxpressao 1/6-[1,1-(1/2-0,4)]

Answer 1

$\frac{1}{6} -[1,1-( \frac{1}{2} -0,4)] = \\ \frac{1}{6} - [ \frac{11}{10} - ( \frac{1}{2} - \frac{4}{10} )] = \\ \frac{1}{6} - [ \frac{11}{10} - ( \frac{5}{10} - \frac{4}{10}) ] = \\ \frac{1}{6} - ( \frac{11}{10} - \frac{1}{10} ) = \\ \frac{1}{6} - \frac{10}{10} = \\ \frac{5}{30} - \frac{30}{30} = \\ - \frac{25}{30} = - \frac{5}{6}$
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