Réponse :

Bonjour

Explications étape par étape

2x = -9

X = -9/2

X = -4.5

-3x = -15

X = -15/-3

X = 5

X - 3 = 8

X = 8 + 3

X = 11

3x - 2 = 0

3x = 2

X = 2/3

5 - X = 0

-x = -5

X = 5

4 - 3x = -5

-3x = -5 - 4

-3x = -9

X = -9/-3

X = 3