Question

Найдите неизвестный член пропорции:

Answer 1

2 1/9 : 6 1/3=x:1,8
2 1/9= 19/9
6 1/3=19/3
1,8=9/5
x=19/9 * 9/5 *3/19=3/5

Answer 2

(2+1/9) : (6+1/3) =х : 1,8
x=(2+1/9) * 1,8 / (6+1/3) = (19/9) * 9/5 / (19/3) = (19/1) * 1/5 / (19/3) =
(1/1) * 1/5 / (1/3) = 3/5 = 0,6