Question

!2x+9!-3=11 и !2x-9!=6=5

! - это модуль

Answer 1

|2х+9|-3=11
|2х+9|=11+3
|2х+9|=14
2х+9=14
2х+9=-14
2х=5
2х=-23
$x1 = frac{5}{2} = 2.5$
$x2 = - frac{23}{2} = - 11.5$
Ответ:
$x1 = 2.5$
$x2 = - 11.5$

|2х-9|-6=5
|2х-9|=5+6
|2х-9|=11
2х-9=11
2х-9=-11
2х=20
2х=-2
$x1 = frac{20}{2} = 10$
$x2 = - frac{2}{2} = - 1$
Ответ:
$x1 = 10$
$x2 = - 1$

Answer 2

|2х+9|=14 |2х-9|=11
2х+9=14 2х-9=11
2х+9=-14 2х-9=-11
Х=5/2 Х=10
Х=-23-2 Х=-1
Х1=-23/2 Х1=-1
Х2=5/2. Х2=10