Question

2x-2=18+4x
6x+9=8x-5
–7х – 4 = 2х + 14
хелпс

Answer 1

Ответ:

2х - 2= 18+4х

2х - 4х= 18+2

-2х= 20

х= 20 : (-2)

х=-10

6х+9= 8х-5

6х-8х= -5-9

-2х=-14

х= -14: (-2)

х=7

-7х - 4= 2х + 14

-7х-2х= 14+4

-9х= 18

х= 18 : (-9)

х= -2