bonjour je n'arrive pas à cet exercice quelqu'un pourrait m'aider svp ? merci d'avance ^^ niveau 3e​

bonsoir

2 x - 5 = 5 x + 1

2 x - 5 x = 1 + 5

- 3 x = 6

 x = - 2

3 - 7 x =  3 x + 2

- 7 x - 3 x = 2 - 3

- 10 x = - 1

x = 1/10

5 x - 6 = - x + 3

5 x + x = 3 + 6

6 x =  9

x = 9/6 =  3/2

2 x - 1/3 = 1

2 x = 1 + 1/3

2 x = 3/3 + 1/3

2 x = 4/3

6 x = 4

x = 4/6 = 2/3

Réponse :

Bonsoir

Explications étape par étape

2x -5 = 5x +1

2x -5x = +5 +1

-3x = 6

x = 6/3

x = -2

3 -7x = 3x +2

-7x -3x = -3 +2

-10x = -1

x = 1/10

5x -6 = -x +3

5x +x = +6 +3

6x = 9

x = 9/6

x = 3/2

2x -1/3 = 1

2x = 1/3 +1

2x = 1/3 +3/3

2x = 4/3

6x = 4

x = 4/6

x = 2/3