Выполните действия (3/4+1/20)×1/2; (7/12-1/3)×16/19; (7 3/5-2 4/15)×9/32

Question

Выполните действия (3/4+1/20)×1/2; (7/12-1/3)×16/19; (7 3/5-2 4/15)×9/32

Answer 1

(3/4+1/20)×1/2 = 0.8х 1/2 = 0.4
(7/12-1/3)×16/19 = 3/12 х 16/19 = 12/57
(7 3/5-2 4/15)×9/32= 13 х 9/32 = 7 целых 3/32