Question

|2х+14|=6
|8х+12|=20
|9х+15|=6
Буду благодарна!

Answer 1

|2х + 14| = 6

2x + 14 = 6
 
2x =  -14 + 6
 
 2x =  - 8

х = -8 : 2 

х = - 4



2x + 14 = -6

2x =  - 6 -14

2х = -20

x= - 20 : 2

 х = -10

.............................................................................................................

|8х + 12| = 20

8x + 12  = 20

8x =  20 - 12

8х = 8

х =8 : 8 

х = 1


8x + 12 = -20

8x = - 20 -12

8х = - 32

х = -32 : 8

х= - 4

..................................................................................................................
|9х + 15| = 6

9x+15 = 6

9x = 6 - 15

9х = -9

х = - 9 : 9 

х = -1


9x + 15 = -6

9x =  - 6  -15

 9х = - 21

х = -21 : 9

х = - 2 целых 3/9 = - 2 целых 1/3