Question

qual o valor da expressao (-3/8)-(2/5) : (-1/2)=

Answer 1

$-\frac{3}{8}-\frac{2}{5}\div \frac{1}{2}=-\frac{3}{8}-\frac{2}{5}*2=\\ \\ -\frac{3}{8}-\frac{4}{5}=\frac{-15-32}{40}=-\frac{47}{40}$