Question

решите пример
(3 1/2:4 2/3+4 2/3:3 1/2)×4 4/5​

Answer 1

(3 1/2 : 4 2/3 + 4 2/3 : 3 1/2) · 4 4/5 = 10

1) 3 1/2 : 4 2/3 = 7/2 : 14/3 = 7/2 · 3/14 = (1·3)/(2·2) = 3/4

2) 4 2/3 : 3 1/2 = 14/3 : 7/2 = 14/3 · 2/7 = (2·2)/(3·1) = 4/3 = 1 1/3

3) 3/4 + 1 1/3 = 9/12 + 1 4/12 = 1 13/12 = 2 1/12

4) 2 1/12 · 4 4/5 = 25/12 · 24/5 = (5·2)/(1·1) = 10

Ответ: 10.