Bonjour, 1) 5x + 6 = x + 30 2) 3x - 4 - x = x + 2 - 4x 3) 5x - 2 = 4x + 3 4)-2x + 7 = 11 5) 3x + 6 = x + 2 mercie d'avance :)

Bonsoir,

1) 5x + 6 = x + 30

5x - x = 30 - 6

4x = 24

x = 24/4

x = 6

2) 3x - 4 - x = x + 2 - 4x

2x - 4 = 2 - 3x

2x + 3x = 2 + 4

5x = 6

x = 6/5

x = 1,2

3) 5x - 2 = 4x + 3

5x - 4x = 3 + 2

x = 5

4) -2x + 7 = 11

-2x = 11 - 7

-2x = 4

x = 4/-2

x = -2

5) 3x + 6 = x + 2

3x - x = 2 - 6

2x = -4

x = -4/2

x = -2