Question

Помогите найти неизвестные члены пропорции!

x : 1/2 = 1/3 : 1/4

18/m = 20/8

Answer 1

х *1/4 = 1/2 *1/3
х /4 = 1/6
х = 4*1/6
х= 2/3

18/m = 20/8
m = 18*8/20
m = 18*4/10
m = 72/10
m = 7.2

Answer 2

1)х = 1/3 : 1/4 * 1/2

х = 2/3

2)m = 18*8 : 20

m = 36/5 = 7целых 1/5