Question

$( \frac{1}{2} + \frac{ 3}{4}) \times (\frac{ - 1}{5} + 2) \: \frac{ - 3}{5} \div \: 0.4$
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Answer 1

​$\frac{2}{8} +\frac{6}{8} =\frac{8}{8} =1$

$\frac{-2}{10} +\frac{20}{10} =\frac{18}{10} =\frac{9}{5}$

$1 . \frac{9}{5} =\frac{9}{5}$

$\frac{9}{5} .\frac{-3}{5} =\frac{-27}{25}$

$\frac{-27}{25} : \frac{4}{10}$

$\frac{-27}{25} .\frac{10}{4}$$=\frac{-270}{100}=\frac{27}{10}$ respuesta