Bonsoir ! svpppp donnez moi les reponses avec les details des calculs svppppp

Réponse :

a) 4x -5x = 2 - 5

-x = -3

x = 3

b) 3x -2x = 7+2

x = 9

c) 5x - 8x = -13 + 7

-3x = -6

3x = 6

x= 6/3

x = 2

d) 7x - 4x = 25 - 10

3x = 15

x = 15/3

x = 5

e) 4x -11x = 2 + 5

- 7x = 7

7x= -7

x = -7/7

x = -1

f) 14 + 36 = 3x + 2x

50= 5x

50/5 = x

x= 10