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