Bonsoir pouvez-vous m’aider svp ! Merci d’avance !

Bonjour,

3x -2x  = -5 -2

x = -7

2x+3x = 17 -7

5x = 10

x= 10/5

x= 2

-11 -13 = 3x+3x

-24 = 6x

6x = -24

x = -24/6

x= -4

7x-4x = 9+2

3x = 11

x = 11/3

5-2 = -4x+5x

3 = x

x=3

-3x+3x+ 15 +9

x= 24

3a+5a = 6 +12

8a = 18

a = 18/8

a =9/4

4a-2a =-12 +12

2a= 0

a =  0