Question

efetuando-se 2/10 * (2-30/8),obtem-se?

Answer 1

$\frac{2}{10} * (2 - \frac{30}{8}) = \frac{2}{10} * ( \frac{16 - 30}{8}) = \frac{2}{10} * \frac{-14}{8} =\ \textgreater \ \frac{-28}{80} = \frac{- 7}{20}$