Question

0.4-3/19*(4.22-28.07:3.5)

Answer 1

$\frac{2}{5} - \frac{3}{19} \times (4.22 - 8.02) = \\ = \frac{2}{5} - \frac{3}{19} \times ( - 3.8) = \frac{2}{5} - \frac{3}{19} \times ( - \frac{19}{5} ) = \frac{2}{5} + \frac{3}{5} = 1$