Решите пропорцию х:2/3=5/8:3​

х:2/3 = 5/8:3

х*3 = 2/3*5/8 - свойство пропорции

х*3 = (1*5)/(3*4)

х*3 = 5/12

х = 5/12

х = 5/12:3

х = 5/12*1/3

х = 5/36

Проверка:

5/36:2/3 = 5/8:3

5/36*3/2 = 5/8*1/3.

(5*1)/(12*2) = 5/24

5/24=5/24