Verified answer

Ответ:

1) 3-8х +4 +9х =

1-8х +9х = -3-4 +1

х = -6

2) 5-3х = 2х +9

-3х-2х = -5 +9

-5х = 4х

= 4\-5

3)-8*(3х+2)= -13-22х

-8*3х+(-8)*2= -13-22х

-24х+(-16)= -13-22х

-24х+ 22х = 16-13

2х = 3

х = 0,5