Question

Срочно Срочно Срочно!!!!!!!​

Answer 1

Пошаговое объяснение:

1) 13x - 6x + 14x = 420

21x = 420

x = 20

2) 20y + 5y + y + 19 = 227

26y = 227 - 19

26y = 208

y = 8

3) ( 874 : x - 18 ) 24 = 3600 : 30

20 976 : 24x - 432 = 3600 : 30

24x = (( 3600 : 30 ) + 432) 20 976

24x = 11 578,752

x = 482,448