3x + 2 = x + 6 -8x + 3 = 5x - 2 -5x + 2 = -9x - 6 18x - 8 = 40 - 25x Aide moi s’il vous plaît

Bonsoir,

3x + 2 = x + 6

3x - x = 6 - 2

2x = 4

x = 4/2

x = 2

-8x + 3 = 5x - 2

- 8x - 5x = - 2 - 3

- 13x = - 5

x = 5/13

-5x + 2 = -9x - 6  

- 5x + 9x = - 6 - 2

4x = - 8

x = - 8/4

x = - 2

18x - 8 = 40 - 25x

18x + 25x = 40 + 8

43x = 48

x = 48/43

Réponse :

Explications étape par étape

Bonsoir

3x + 2 = x + 6

3x + 2 - 2 - x = x + 6 - 2 - x

2x = 4

2x/2 = 4/2

x = 2

-8x + 3 = 5x - 2

-8x + 3 + 8x + 2 = 5x - 2 + 8x + 2

5 = 13x

5/13 = 13x/13

x = 5/13

-5x + 2 = -9x - 6

-5x + 2 - 2 + 9x = -9x - 6 - 2 + 9x

4x = -8

4x/4 = -8/4

x = -2

18x - 8 = 40 - 25x

18x + 25x = 40 + 8

43x = 48

x = 48/43