Bonjour pouvez vous m’aidez à l’exercice 10 merci d’avance

Bonjour,

a. 2x + 1 = 2

2x = 2 - 1

2x = 1

x = 1/2

b. x - 1 = 3 - 4x

x + 4x = 3 + 1

5x = 4

x = 4/5

c. x + 2 = - 7

x = - 7 - 2

x = - 9

d. √(x - 4)² = 7

x - 4 = 7

x = 7 + 4

x = 11.