Question

Помогите решить номер 464(2,3)

Answer 1

2)   4 2/9x+3 5/14=6 11/21

20/9x=137/21-47/14

20/9x= 274/42-141/42

20/9x=133/42

x= 133/42:20/9

x=27/40

3) 11/18-14/27x=5/12

-14/27x=5/12-11/18

-14/27x= -7/36

x= -7/36 : (-14/27)

x=3/8