Question

50 3/7-49-31/35+53 16/35-52 54/5

Answer 1

$50 \frac{3}{7} - 49 = 1 \frac{3}{7} - \frac{31}{35} = \\ 1 \frac{15}{35} - \frac{31}{35} = \frac{50}{35} - \frac{31}{35} = \frac{19}{35}$
$\frac{19}{35} + 53 \frac{16}{35} = 53 \frac{35}{35} = 54$
$54 - 52 \frac{54}{5} = 54 - 62.8 = - 8.8$
Ответ:-8,8